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HomeMy WebLinkAbout20160641 Ver 1_Backyard Stream Repair Guide_20160715Strickland, Bev From: Leslie, Andrea J Sent: Friday, July 15, 2016 12:29 PM To: Mitchell, Robert K Cc: stan@swassociatesinc.com Subject: Ken Feldman Shoreline Stabilization Attachments: BackyardStreamRepairGuide.pdf Hi Kevin, I have reviewed the information sent to me on the Ken Feldman Shoreline Stabilization project on Lake Rhodhiss in Caldwell County. The applicant proposes to stabilize 164 ft of shoreline on Lake Rhodhiss with rip rap. We do not object to the project as long as it addresses an active and appreciable shoreline erosion problem. The photos provided do not show appreciable erosion and the shoreline appears to be gently sloped and stable, covered in native vegetation. This native vegetation appears to be providing adequate erosion control. The shoreline is covered with mature trees and shrubs, and downed trees lay along the shore, providing important habitat for wildlife. Fallen trees and other large woody debris along the shoreline are especially important, providing cover for various sunfish, largemouth bass, and other fishes in the lake. In addition, trees and shrubs above the waterline not only stabilize banks but also serve as habitat for wildlife such as song birds. If this project is permitted, we offer the following recommendations to minimize impacts to terrestrial and aquatic wildlife: 1. Any shoreline stabilization should be limited an area of appreciable erosion. 2. Large woody debris should be left in place or moved temporarily and replaced after stabilization work is complete. 3. Retain as many shrubs and trees as possible on the shoreline. The applicants mention that they intend to replant natural vegetation. Please see attached reference, which contains excellent recommendations on native grasses, wildflowers, shrubs, and trees to plant on stream banks. These should work well for lakeshore, as well. 4. We recommend the use of bioengineering techniques over hardening where possible. Thank you for the opportunity to review and comment on this project. Please contact me if you have any questions about these comments or need further assistance. Andrea Andrea Leslie Mountain Habitat Conservation Coordinator NC Wildlife Resources Commission 20830 Great Smoky Mountain Expressway Waynesville, NC 28786 828-558-6011; 828-400-4223 (cell) www.ncwildlife.org Get NC Wildlife Update delivered to your inbox from the N.C. Wildlife Resources Commission. Email correspondence to and from this sender is subject to the N.C. Public Records Law and may be disclosed to third parties. Small-scale Solutions to Eroding Streambanks What if my tree do I mow Low ithout falling to the creek? falls? How much soil will it take? ~ I'm losing land 11'x' ` = ``' with every rain! max:; How do I fix this? �* - •� all I used to be able to jump across this creek. Why is it getting wider? s .. . Do you have a stream on your property that is losing land in large or small chunks (aka erosion) during or after storm events? Maybe the stream has started cutting deeper into the channel, creating more of a gully. Have you wondered why your streambank seems to be changing rapidly? NC is urbanizing. We have more homes, commercial buildings, parking lots, and roads and less forested landscapes to slow down rainwater runoff. So there is less water going into the ground and more stormwater flowing to our local streams. Increased volume means increased velocity within the stream. How much stormwater is added to creeks? In a 1" rain an acre parking lot can drain 27,000 gallons of rainwater to local streams. With annual rainfall of 40", depending on where you live in NC, that adds up to a lot of water! All this extra stormwater runoff erodes streambanks and is the largest source of sediment and pollution in the urbanized areas of NC. NCState University A&T State University COOPERATIVE EXTENSION Empowering People - Providing Solutions do I mow Low ithout falling to the creek? all I used to be able to jump across this creek. Why is it getting wider? s .. . Do you have a stream on your property that is losing land in large or small chunks (aka erosion) during or after storm events? Maybe the stream has started cutting deeper into the channel, creating more of a gully. Have you wondered why your streambank seems to be changing rapidly? NC is urbanizing. We have more homes, commercial buildings, parking lots, and roads and less forested landscapes to slow down rainwater runoff. So there is less water going into the ground and more stormwater flowing to our local streams. Increased volume means increased velocity within the stream. How much stormwater is added to creeks? In a 1" rain an acre parking lot can drain 27,000 gallons of rainwater to local streams. With annual rainfall of 40", depending on where you live in NC, that adds up to a lot of water! All this extra stormwater runoff erodes streambanks and is the largest source of sediment and pollution in the urbanized areas of NC. NCState University A&T State University COOPERATIVE EXTENSION Empowering People - Providing Solutions NC Cooperative Extension - Backyard Stream Repair Program Team Wendi Hartup, Natural Resources Extension Agent Bill Lord, Area Specialized Extension Agent Wendy Patoprsty, Natural Resources Extension Agent Mitch Woodward, Area Specialized Extension Agent Sabrina Woofter, Natural Resources Extension Agent http://go.ncsu.edu/backyardstreamrepair Funding for this guide was provided in part through an Urban and Community Forestry Grant from the North Carolina Forest Service, Department of Agriculture and Consumer Services, in cooperation with the USDA Forest Service, Southern Region. Written by: Wendi Hartup Major contributors: Wendy Patoprsty, Nancy Stairs and Mitch Woodward Special thanks to our reviewers: Dr. Michael Burchell, Dr. Barbara Doll, Dr. Karen Hall, Sue Homewood, Dr. Greg Jennings, Johnathan Wishart, and Marcia Wood. All pictures unless otherwise noted: © NC Cooperative Extension. 2 NC Cooperative Extension Backyard Stream Repair Program Riparian buffers, streamside forests, and shoreline gardens all refer to the vegetated area along the water's edge. There are all kinds of benefits to you, your downstream neighbors, and the surrounding environment when plants with deep roots are growing on the creek bank. ♦ Improves bank stability and reduces erosion, saving property from washing. ♦ Adds aesthetic value to property. ♦ Creates a sense of place and reduces noise. ♦ Costs less to maintain than turf - no need for mowing, watering, and fertilizing. ♦ Slows surface stormwater flow. ♦ Intercepts pollution - fertilizer, pesticides, heavy metals, etc. ♦ Allows sediment to settle out before clouding up a waterway. ♦ Cools stormwater runoff heated by sunlight on hard surfaces. ♦ Shade moderates water temperatures for aquatic species. ♦ Provides habitat for many types of wildlife (butterflies, hummingbirds, frogs, dragonflies). Being around water brings a sense of calm and relaxation. Most people living near water want a clear view and remove all the landscape. Why not? If you live near the water, you want to see it! But what if all your upstream neighbors want that too? Often times we don't realize that by simply removing vegetation or keeping an area only in turf grass next to the creek we actually contribute to erosion, increase the likelihood for flood damage, and decrease the available habitat for wildlife. There is a compromise; utilize the right plant for the right place to create a shoreline garden. Before you consider altering your streambanks, you need a clear image of what a healthy, stable stream looks like. It can be difficult to find healthy streams in urban areas to use as an example. Study the two photos below. Which one looks like it is stable, meaning the banks are not eroding. Is there shade on either stream? The one on the left has banks that are very steep and could be a safety issue; especially if you were on a mower! The one on the right has a more gentle slope and vegetation extending to the water's edge for easier and safer access. NC Cooperative Extension Backyard Stream Repair Program 3 Fluctuating streams that rise and fall quickly during and after rainfall events can saturate and loosen soil. Plant roots hold soil but their effectiveness relates to their root depth (turf grass may only have 4"-6" deep roots). Unanchored soil will continue to wash away until it finds a stable point that is difficult to erode... usually bedrock. This may take a few storms or decades to see significant impact but the damage is inevitable. A mix of native trees, shrubs, flowers, ferns, and grasses at varying heights provides a tangled mix of different root structures that help to hold soil to the banks along with all kinds of other benefits to the environment. � +r Area of root reinforcement (generally 2 to 3 ft depth) Key Cgor�iderations Mixed plant forms Overlap plantings Open canopy for good understory plant growth Buick growing Tolerant of inundation and flexible Many herbaceous plants have fibrous root systems and protect banks from surface erosion. Woody species with deeper roots will be better at increasing soil cohesion and reducing mass slope failure. The best approach is a combination of plant types. © Gary Bentrup Step 1: Evaluate Streambank Take a stroll along your streambank and observe the current conditions. A publication to help examine your creek more in depth is Stream-A-Syst (ftp://ftp.wcc.nres.usda.gov/wntsc/strmRest/StreamASyst2001.pdf) Questions to ask about your stream: ♦ Does your stream flow year-round, seasonally or only during rain events? ♦ Does the stream rise and fall quickly with rainfall events? ♦ Does the soil along the bank slide off after rain events? ♦ How deep and wide is the creek? ♦ Are there any culverts or drainage pipes flowing into your stream? ♦ Is the stream straight or does is meander through the landscape? ♦ Does your shoreline have a variety of plant types? ♦ Do you know if the plants are native vs. invasive? ♦ What kind of root structure do existing plants have? 4 NC Cooperative Extension Backyard Stream Repair Program Step 2: Determine Options There are many different ways to manage streambanks. Choose from one of the following options to stabilize a streambank. Option 1: Do nothing and let it grow wild up to 15' from water's edge. Allow whatever seeds are in the soil, as well as what washes from upstream neighbors, to establish on the streambank. Optimal time of year: This can be done anytime of year. Pros: No work and no costs. Cons: Undesirable plants (invasives such as kudzu) can take over the area. It can look weedy and still erode for several years until plants mature. Next step: Do nothing, you're done with this guide. Option 2: Plant native vegetation without grading. Start planting native trees 5' from edge of bank; regardless of slope (see illustration below). Plant livestakes (cuttings of native trees and shrubs; see pages 13-14) every 3' along the water's edge. Only plant in rows as high as the soil is saturated. Soil may still slough off but as plants grow, the root mass will begin to hold the soil together. Optimal time of year: Dormant season or October -March. Pros: Cost-effective and slows erosion. Cons: May be a temporary fix and land can still be lost. Next step: Skip to plant selection on pages 12-18. Look over maintenance suggestions on page 19. - 7�yy � d M�� , fi .. , ^^'A4•.'1 t it . 'ajti:.*, ��� _ i"'; Y"R 10 Vo Plantnative tree eeeep •, .�' t roots 5h firwn wt b slope r alf Y �. year cid Be f livestake nati 1 ._- season livestakes Option 2: Plant diverse, native flora without changing the grade (above left illustration). Above right photo shows livestakes installed every 1' on existing slope to create snag and quick root mass (© N. Alexander). NC Cooperative Extension Backyard Stream Repair Program Option 3: Grade banks to a 3:1 slope and plant. Most ideal for a stable bank. Take time to plan whether you will do the work yourself or hire someone, select type of plants you want (or copy the design on page 16) and determine how you will maintain the appearance you want (tips on page 19). Optimal time of year: Dormant season or October -March. Pros: Safer, stable banks, not losing land and attractive. Cons: Financial investment and potential soil compaction from heavy equipment. If choosing Option 3, the next steps are: F+ Before grading After grading ' Option 3: A stream site in Newland, NC. The landowner's home is less than 20' from the water with 2'-3' vertical banks (above left photo). Above right photo shows newly graded, stabilized and planted bank. A) Contact your local technical resource: You may need a permit or help determining where to start work near the stream (called Ordinary High Water). ♦ Army Corps of Engineers (Pre -Construction Notification, Section 404 Permit and Ordinary High Water determination) www.saw.usace.army.miI/Missions/RegulatoryPermitProgram.aspx ♦ NC Cooperative Extension http://go.ncsu.edu/backyardstreamrepair ♦ NC Division of Soil and Water Conservation www.ncagr.gov/SWC/ ♦ NC Division of Water Resources http://portal.ncdenr.org/web/wq/401bufferpermitting ♦ Local government (to determine if any buffer rules apply) After complying with local and state requirements... B) Determine 3:1 slope: A "three -to -one slope" (33.5% or 18°) is considered the ideal, stable slope. To calculate a 3:1 slope for grading a streambank, measure the change in elevation (from Ordinary High Water mark to top of the bank). Multiply that height measurement by 3. Then measure the multiplied distance from the bank into the landscape and mark it. 6 NC Cooperative Extension Backyard Stream Repair Program For a bank that is 2' high, multiply by 3. 2'x 3' = 6' Measure 6' back into the landscape and flag it. Grade between the landscape flag and the Ordinary High Water flag (depicted as red circles above). C) Acquire Stabilization Supplies: Temporary and permanent seeds are needed along with other erosion control materials until vegetation establishes. Permanent Seed Mixes Apply at 15-20 lbs per acre of streambank disturbance (per specifications of seed supplier). Mixes can include but not limited to: Deertongue, VA Wild Rye, Big Bluestem, Fox Sedge, Partridge Pea, Switchgrass, Blue Vervain, Autumn Bentgrass, Ox -eye Sunflower, Little Bluestem, Purpletop, Boneset, Soft Rush, Giant Ironweed, Black-eyed Susan, Joe Pye Weed, Great Blue Lobelia, Wild Bergamont. Temporary Seed and Specifications Common Scientific Rate Optimal Plant Name Name per Date acre Rye Grain Secale cereale 30 lbs Aug 15 - May 15 Browntop Urochloa 10 lbs May 15 - Aug 15 Millet ramosa Partridge Chamaecrista 10 lbs Mar - May Pea fasciculate Examples of suppliers with native, perennial mixes for NC streambanks. ♦ www.ernstseed.com ERNST Conservation Custom Mix, ERNST Riparian NC Mix ♦ www.green-resource.com Custom Riparian Seed mix ♦ www.mellowmarshfarm.com MMF Riparian Seed Mix, MMF Pollinator Mix Straw Use an average of 1 bale for 800-900 square ft at 1/2"-3/4" deep. (Source: http://efotg.sc.egov.usda.gov/references/public/NC/NC342_Cri ticalArea_04-2014.pdf) Coir Matting Heavy biodegradable matting - 700 gram, 6.5' x 160' (check with local supplier for availability options). Stakes Need biodegradable 12" eco -stakes (--80-90 per roll of matting) and 2' oak stakes (--60-70 per roll of matting). Note: These materials can be purchased from erosion control companies and landscape/farm supply stores. Other Helpful Tools Mallets, shovels, tampers, rakes, seed spreaders, and volunteers. D) Grade banks) to appropriate slope (3:1 is ideal). Equipment is helpful but this can also be done by hand (very labor intensive). Avoid dropping sediment into water. Keep equipment out of water unless a permit was approved. E) Seedbed Preparation. Disturbed soils within riparian areas should be lightly raked to provide maximum soil contact for seed germination and seedling growth. Surface soils should be loose enough for water infiltration and root penetration. NC Cooperative Extension Backyard Stream Repair Program F) Dig a trench on the upstream end. A trench should always start on the upstream end of your project to prevent overland flow and high water streamflow from cutting under the matting. Dig a 6.5' trench line perpendicular to the stream from the water's edge for the width of matting. Another trench line should be dug along the top of where matting will be laid for the entire reach length; parallel to the stream. Trench 5 !� Tr�� rm AMA W_ 7 3 CX? n zi Trench 2 Blue arrow depicts water flow direction. Above left photo shows a site with Trench 1 perpendicular to the stream at the beginning of mat roll. Trench 2 is to secure top of mat. Above right photo depicts a site where another matting layer is needed due to typical high flows. Trench 3 and Trench 4 are dug perpendicular to the stream for start of rolled matting. Trench 5 is parallel to the stream at the top of the bank. G) Spread temporary and permanent seed mix with spreader for more uniform planting. Choose temporary seed based on time of year (chart on page 7) and select permanent seed. Many seed suppliers can pre -mix temporary and permanent seed together. Seed suppliers can assist you with a rate per square foot based on the seeds you select. H) Lightly cover seed with straw. Purpose: to lightly cover seed, provide moisture for growth and protect seed from scavenging birds. Straw a LL ihould be able to see soil through straw like inset photo. 8 NC Cooperative Extension Backyard Stream Repair Program 1) Start coir matting in trench. The following sequence of photos demonstrate how to install matting. 01 Matting 2) Roll out matting and tamp down oak stakes every 4' at water's edge. Follow the contours of streambank with matting constantly touching soil. Do not pull taut. A x AIL Z� Matting 3) Add 2' oak stakes every 10' to top of matting. Randomly hammer in eco -stakes every 4'-6' feet throughout the matting as well as along the top edge. Matting 4) Once all the matting is laid out and secured with stakes, cover trenches with a few inches of soil, tamp it down and lightly cover top edge with straw to undisturbed landscape. NC Cooperative Extension Backyard Stream Repair Program 9 Step 4: Choosing the Right Plants Plants for streambanks should be selected based on soil moisture, sun, height and width or spread. Choose native plants for best results. Tips for planning a shoreline garden: ♦ View: Consider the views you want to maintain and frame a "view corridor" from your home. Utilize vegetation that will vary in height as it matures. You can limb up trees and shrubs to see the water but use proper pruning practices. The more plants growing, the more root mass stabilizing the streambank. ♦ Plant Location: Choose plants according to their moisture tolerance. Plants in Zone A are located at the water's edge and will have wet roots 99% of the time. Plants in Zone B may only be wet 67%-99% of the time; such as during storm events or seasonal inundation. Soil saturation could vary from 1'- 6' away from the water's edge. (Tip: Dig a 1' deep hole. Try to make a ball; if it crumbles... it's not saturated). Plants in Zone C prefer a drier soil condition but must be adapted to seasonal flooding. 4. B i� f r •�' " s � Planting zones: A = Herbaceous, B = Livestakes and C = Containers. ♦ Foliage: Do you want to attract certain birds and butterflies? Do you want seasonal color throughout the year? Adding texture, form and habit can produce interesting plant patterns. Choosing a variety of deciduous and evergreen provides seasonal interest. 10 NC Cooperative Extension Backyard Stream Repair Program ♦ Spacing: There are two ways to space plants; 1) over planting for quicker root mass to hold soil or 2) space according to future mature height and width (aka spread). Plant in groupings of species for a garden or landscaped feel. Research shows you'll keep it, if you love it! Use a variety of plant sizes to save costs but keep in mind they will increase in size (ex. plugs, bare root seedlings, livestakes, and containers). ♦ Inventory: Onsite plants may be transplanted. Avoid planting and try to eliminate non-native invasives, which are plants that tend to out -compete everything and become a monoculture. Common Non-native Invasives Ailanthus altissima (Tree -of -Heaven) Albizia julibrissin (Mimosa) Elaeagnus umbellata (Autumn Olive) Fallopia japonica (Japanese Knotweed) Hedera helix (English Ivy) Lespedeza cuneata(Korean orSericea Lespedeza) Ligustrum sinense (Chinese Privet) Microstegium vimineum (Japanese Stiltgrass) Paulownia tomentosa (Princess Tree) Pueraria lobata (Kudzu) Rosa multiflora (Multiflora Rose) Japanese Knotweed (Fallopia japonica) is rapidly growing along a newly graded site. It spreads by underground rhizomes, up to 30' away from the parent plant, as well as from seed and plant parts that float downstream. Optimal Plant Scheduling ♦ Stream edge herbaceous transplants or plugs - plant after last Spring frost ♦ Livestakes and bare root seedlings - Winter When plants are dormant (October - March) and before bud break. ♦ Containers - anytime of year Avoid Summer = requires 1" watering or rainfall per week; difficult to irrigate r� aK w vft,Wx.� e 5= Planting in Matting Make an X cut with a knife in matting. Dig a hole deep enough for plant. Take plant out of pot, loosen roots and put in hole. Put dug out soil back around plant. NC Cooperative Extension Backyard Stream Repair Program 11 Sun Conditions F Full Sun 6+ hours P Partial Sun 2-6 hrs S Shade <2 hrs D/E Deciduous (D) / Evergreen (E) Wet Code OBL Zone A Obligate Wetland: Found in wet zones 99% of time. Plant roots tolerate Height Wet saturation. Facultative Wetland: Usually occur in 67%-99% of time in wetlands, but FACW Zone B occasionally found in non -wetlands (ex. fluctuating river levels). Sun Zone Facultative: Equally likely to occur in wetlands or non -wetlands; FAC B/C estimated probability 34%-66%. Features FERN Facultative Upland: Usually occur in non -wetlands 67%-99% of time, but FACU Zone C occasionally found in wetlands 1%-33% of time. UPL Zone C Obligate Upland: Occur almost always in non -wetlands 99% of time. Bloom Color Btu Blue Bur Burgundy Crm Cream Grn Green Org Orange Pnk Pink Pur Purple Red Red Wht White Yet Yellow Zone A: Herbaceous plants A sampling of herbaceous plants that can bend with the river flow at the water's edge (wet code = OBL and FACW). 12 NC Cooperative Extension Backyard Stream Repair Program Height Wet Bloom Type Common name Botanical name Sun x Width Code Time Bloom D/E Features FERN Chain Fern Woodwardia areolato P -S 1'-2' OBL D Amphibian shelter Crm, Iris -like leaves, GRASS Sweet Flag Acorus calamus F -P 2'-4' OBL Yel E iflowers not showy GRASS Fringed Sedge Carex crinita P -S 4' OBL E Drooping seed heads Southern Waxy Food source for GRASS Sedge Carex glaucescens F 2'-4' OBL Btu E waterfowl Eleocharis GRASS Spike Rush quadrangulata F -P 2' OBL E 4 -sided rush GRASS Soft Rush Juncus effusus All 3'x1' FACW E Clump -forming PERENNIAL Swamp Milkweed Asclepias incarnata F -P 2'-4' OBL Jun -Oct Pnk D Pollinator Bird, butterflies, PERENNIAL Hardy Hibiscus Hibiscus moscheutos F 3'x2' OBL Jul -Sept Red D hummingbirds Btu, Bird, butterflies, PERENNIAL Blue Flag Iris Iris virginica F -P 2' OBL May Wht D hummingbirds Hummingbird, PERENNIAL Cardinal Flower Lobelia cardinalis F -P T-5' FACW May -Oct Red D pollinator 12 NC Cooperative Extension Backyard Stream Repair Program Zone B: Livestakes Livestakes are cuttings from certain native, dormant trees and shrubs. They are inexpensive and hardy. The ones listed below have proven successful (wet code = OBL and FACW). Common Botanical Name Sun Height x Wet Bloom Bloom D/E Features Name Width Code Time Buttonbush Cephalanthus occidentalis F -P 10'x5' OBL Jun -Aug Wht D Fall reddish flowers, yellow leaves, fragrant Silky Cornus amomum F -S U-10' FACW May -Jun Wht D Attracts birds, hummingbirds, Dogwood pollinators Red Twig Cornus sericea (C. F -P 15' FACW May -Jun Wht D Attracts birds, hummingbirds, Dogwood stolonifera) pollinators Ninebark Physocarpus opulifolius F -S 8'x10' FACW Spring Wht, D Yellow -bronze fall leaves, Pnk exfoliating bark Silky Willow Salix sericea F -S 12' OBL Spring Grn, D Wildlife, fast growing, establishes Yet quickly Elderberry Sambucus canadensis F -P 5' 12' FACW Jul Wht D Edible Silky Dogwood © Jon Calabria W ,= A 4i! Ninebark © David Emmitt Silky Willow © Alan Cressler i"yra SSP "r T �� Elderberry Harvesting Livestakes Best time to cut and plant Livestakes: November -February 1. Cut stakes from long, upright branches (2' long x thumb -width in diameter). Remove no more than 5% of the parent plant. 2. Make an angled cut on the branch just below a leaf node. Measure about 2' and make a straight cut above a leaf node. 3. Immediately remove leaves and small branches after cutting stakes. Any extra pieces or "whips" can be pushed into the streambank as well. 4. Keep Livestakes wet in a bucket until ready to plant. Never leave stored Livestakes in the sun or let them dry out. For best results, plant livestakes within 24 hours of harvest. Make sure to keep them upright, if planted upside down they will not grow. NC Cooperative Extension Backyard Stream Repair Program Planting Livestakes Along Creekbanks Helpful Materials: Gloves Smooth metal rod Livestakes in bucket of water Hammer (dead blow, mallet, etc.) Hand pruners or toppers Step 1: Within the first 12" above the current water level, angle the metal rod perpendicular to the bank. Hammer a pilot hole and pull metal rod back out after starter hole is made. Livestake will go in starter hole; perpendicular to the bank. -; Step 2: Orient livestake with leaf buds facing upward (pointed end goes into the ground). Hand push or gently hammer livestake 3/ of the length into the bank. p Make sure to leave 3"-4" sticking out of ��.:.;. ground above soil line. If the top of the stake is smashed, make a clean cut for ;r►� faster and healthier healing of the livestake. Step 3: Plant first row every 3' minimum. Stagger another row a few feet up in a triangular pattern and begin again. As long as the soil is saturated, livestakes can be installed. Buying Livestakes in NC 6 Carolina Wetland Services, Inc.; Charlotte, NC (704) 527-1177 www.cws-inc.net 4 Coastal Plain Conservation Nursery; Edenton, NC (252) 482-5707 www.coastalplainnursery.com 6 Deerwood Nursery; Zirconia, NC (828) 606-3625 www.deerwoodnursery.com ♦ Foggy Mountain Nursery; Creston, NC (336) 384 -LEAF www.foggymtn.com 6 Lumber River Native Plants; Gibson, NC (336) 601-8787 www.ncnativeplants.com ♦ Mellow Marsh Farm; Siler City, NC (919) 742-1200 www.mellowmarshfarm.com ♦ Native Roots Nursery; Clinton, NC (910) 385-8385 www.nativerootsnursery.com 14 NC Cooperative Extension Backyard Stream Repair Program Zone Q Containers (wet code = OBL, FACW, FAC, FACU, and UPL) NC Cooperative Extension Backyard Stream Repair Program 15 Height Wet Bloom Type Common name Botanical name Sun x Code Time Bloom D/E Features Width Pachysandra GROUNDCOVER Allegheny Spurge procumbens P -S 6" UPL Mar -May Wht E Fragrant Chrynianu m GROUNDCOVER Green and Gold P -S 1'x1.5' UPL May -Oct Yet D Nectar producer virgiianum Dwarf GROUNDCOVER Huckleberry Gaylussacia dumosa P 3"-15 " FAC Spmmer Wht S Rhizome spreader Birds love the seed PERENNIAL Black-eyed Susan Rudbeckia hirta F -P 2'x1' FACU Jun -Oct Yet D in Fall, pollinators Virginia Tradescantia Btu, PERENNIAL Spiderwort virginiana P -S 3'x1.5' FACU May -Jul Pur D Pollinators Callicarpa Wht, Fall clustered SHRUB Beautyberry americana P 6'x3' FACU Jun -Aug Pnk D berries, bird Wild Hydrangea, Hydrangea Grn Fast growing, short SHRUB Sevenbark arborescens P 3' 6' FACU Jun Aug Wht D -lived, suckers Fall leaves yellow, SHRUB Fothergilla Fothergilla major F -P 10'x9' FACW Apr -May Wht D orange and red - purple Birds eat berries SHRUB Winterberry Ilex verticillate All 15'X10' FACW Jun -Aug Wht D after they freeze a few times Virginia Butterflies, birds, SHRUB Sweetspire Itea virginica All 6'X6' OBL Jun -Jul Wht D pollinators Fragrant flowers Leucothoe Wht produce good SHRUB Doghobble fontanesiana P S 4'x5' FACW April May Pnk E nectar; good amphibian cover Downy Amelanchier Wht, Fall gold to red- TREE Serviceberry arborea F -P 25'x15' FAC Mar -May Pnk D orange, birds Exfoliating bark; TREE River Birch Betula nigra F -P 70'x60' FACW D fast -grower, bird Chionanthus TREE Fringetree All 20'x20' FAC May Wht D Fruit attracts birds virginicus Birds, butterfly,pollinators TREE Persimmon Diospyros virginiana All 30'-60' FAC May -Jun D Carolina Halesia carolina or TREE Sitverbell H. tetraptera F -P 30'x15' FAC Apr -May Wht D Pollinators Hamamelis TREE Witch Hazel F -P 30'x25' FACU Oct -Nov Yet D Birds virginiana NC Cooperative Extension Backyard Stream Repair Program 15 Example Streambank Design 150'long x 20' wide Key # Plant Species Spacing J 75 Rush (3'x1 ; plant every 2') SD 30 Silky Dogwood (15'x6'; plant every 10' at water's edge with a second row T-4' on bank staggered) VS 10 Virginia Sweetspire (6'x6') Dh 11 Doghobble (4'x5') Fr 2 Fringetree (20'x20') RB 1 River Birch (70'x60') GG 150 Green and Gold (1'x1.5; two rows staggered at top of bank every 1.5') Seed Mix Across Entire Site Plant Species Black-eyed Susan, Rudbeckia hirta White Clover, Trifolium repens Buckwheat, Fagopyrum esculentum Partridge Pea, Chamaecrista fasciculate Browntop Millet, Urochloa ramosa 16 NC Cooperative Extension Backyard Stream Repair Program 0 This cross-section depicts a gentle slope. The below plants are those found in the design on the opposite page. }y� so ' �.' A -. Silky Dogwood e� Y Buckwheat pt "-�% -­ -,;- A Partridge Pea NC Cooperative Extension Backyard Stream Repair Program 4V i i' - i Black-eyed Susan 17 Plant Expectations In the first year, expect additional volunteer plants to grow. Learn to identify and decide whether to pull out or manage. Some plants can die back but may sprout from the base of the plant; give plants a season before giving up and replacing. It may take more than a year for permanent seed to germinate and begin to grow. It may take a few seasons to a few years for plants to establish (grow beyond their root ball and not need 1" of water per week); depending on the plant. Throughout the year sediment and debris may deposit on matting. It is okay to leave deposits in place as they often move on with another storm. iv,4 �Ar, , - 9 ILI Y iii 7/talli r,&M M Soft Rush (Juncus effusus) and Jewelweed (Impatiens capensis, pictured above) will often come up along creek banks without planting. These two plants bend with river flows and stabilize banks at the water's edge. Plant Selection ♦ A Field Guide for the Identification of Invasive Plants in Southern Forests http: / /www. srs. fs. usda. gov/ news /456 ♦ Conservation Buffers: Design Guidelines for Buffers, Corridors, and Greenways. http: / /www. bufferguidelines. net/ ♦ NC Native Plant Society http: / /www. ncwildflower.org/ ♦ NC Forest Service, Urban and Community Forestry http: / /ncforestservice. gov/ Urban /Urban—Forestry. htm ♦ North American Digital Flora: National Wetland Plant List http: / /wetland plants. usace. army. mil/ ♦ Riparian Vegetation Resource List (NCSU Stream Restoration Program website) http://www.ncsu.edu/srp/riparian.html � M - ;q�y `i►7" k _ �M. - a A shoreline_garden in Boone, NC. 18 NC Cooperative Extension Backyard Stream Repair Program Step 5: Maintaining Your Shoreline Garden The best care is the least care when it comes to a stream buffer. Resist the urge to tidy up. Here are some typical maintenance suggestions. ❑ Install deer and beaver guards to protect plants from wildlife browsing for the first couple of years. ❑ Initial fertilization / liming - get a soil test to determine what the soil needs are. ❑ Visit streambank at least seasonally. ❑ Spring ❑ Fall ❑ Summer ❑ Winter ❑ Pick up litter and trash as it will most likely wash down from upstream. ❑ Observe plant survival rates to determine what needs to be replanted. ❑ Observe and ID invasive plants to determine your eradication management plan. If you keep up with what is supposed to be there, and get rid of what's not on your list, it will make for much easier maintenance in the future. ❑ Prune only as needed for future health of the tree. The object is to build a strong, below ground, root system to protect bank integrity and allow a dense canopy to shade the stream. If a large tree threatens to fall from a steep bank, you can cut the tree 10' above the ground surface, and leave the root system in place. The "snag" that remains on the streambank will provide a great home for wildlife. ❑ Mowing - while not always needed or required, could be mowed at 6" once plants are established. This should be done in late Fall but watch for trees and shrubs (be very careful not to hit planned vegetation with weed eater as this will scar it and open the door to future disease and early plant death). ❑ Inspect after large rain events or flooding. Repair small eroded spots before they get worse. If large woody debris is going to dam the creek and cause inundation, remove a 2' piece out of the log so water can flow through but leave the rest for fish habitat. ❑ Succession happens so eventually perennials will thin out due to shade from trees and shrubs. Helpful tip: Google pictures of what was planted by season, so you know what you've got and don't accidentally cut down good vegetation! NC Cooperative Extension Backyard Stream Repair Program 19 "The song of the river ends not at her banks but in the hearts of those who have loved her." -Buffalo Joe North Carolina State University and North Carolina A&T State University commit themselves to positive action to secure equal opportunity regardless of race, color, creed, national origin, religion, sex, age, veteran status or disability. In addition, the two Universities welcome all persons without regard to sexual orientation. 1500 copies of this public document were printed at a cost of $2597, or $1.73 per copy. NCState University A&T State University COOPERATIVE EXTENSION - Empowering People • Providing Solutions