Difficult to access, prone to erosion or dry soil, banks and slopes can be challenging for most gardeners. Yep, I planted flax. exaltatus); and C.h.g. and grew on the following year. This improved Lomandra has a shorter size, finer leaf and strengthens the soil up to 216% (see research). They’re typically used in situations where the shoreline on a pond, stream, or river bank is severely eroding. They are native to South Africa. When people take ice plant off a hillside for example, they should never pull it up, but simply clip it off. You can also choose native plants with different bloom cycles for year-round color and variation. ¥ Prevent surface erosion on steep slopes ¥ Increase native riparian vegetation and habitat ¥ Stabilize small creek banks ¥ Divert and/or absorb runoff ¥ Minimize and prevent bank failure Soil-bioengineering has many benefits over more conventional engineering solutions, such as: ¥ Reducing maintenance costs If so, this will help hold the soil. There are many types of shrubs, perennials, vigorous vines or groundcovers that can be used. Plant it in fall and just spritz the foliage with a little spray of water in the evening of hot dry days in summer to make the plant feel as if it has been moistened by a light shower or heavy dew. Plants placed along the sides of a ditch provide many benefits. I planted a whole steep bank myself once in late summer when I was young and then I kept it watered daily by sprinkling with the hose. There is no getting around the fact that honeysuckle is a fast spreading and effective ground cover for steep banks. They remove water from the soil and carry it up into their tissues and release it as water vapor into the air (evapotranspiration). This method is installed above the normal stream flow and provides immediate protective coverage of the bank. It was built in a vacated gravel pit. Use plastic — There are many types of shrubs, perennials, vigorous vines or groundcovers that can be used. Continue Reading, Gardening Question From Crystal: I am going to be doing some container gardening this summer for the first time. Clusters of small (young)Ponytail Palms are also very drought resistant and their bulbous “feet” can be planted to hold and divert rainfall across the slope and into little swales created behind trees and shrubs. Plants’ roots stabilize the soil from below, while vegetation above the ground prevents erosion. I’m looking for native plants species for erosion ; many of the plants you mentioned are from Australian/S. Create dams and barriers to slow the flow of any water. Be sure to water well, when using jute mesh. I live in the san Francisco Bay area and could you you let me know where I could buy these plants as well as some trailing Gazania? All, including native plants, need irrigation to become established and also natives will look better and do better if given a spritz with the hose at the end of the hottest summer days—not enough to wet the ground but enough to moisten the leaves and the top of the ground as would occur if a light rain had fallen. In winter, it's less attractive: I did this in one garden with a short but steep bank, and each winter I would go along the top and cut off all the old black growth. Plant Grass and Shrubs. Time is of the essence. Mowing is challenging and water will simply run off this high moisture loving plant. Dot the steep slope with native, drought-tolerant shrubs (Toyons, Lemonade-berry, low-water Manzanitas). My main concern is finding plants that will help control any future erosion of this bank that leads to the pool, while being visually pleasing as well as “pool friendly”. I agree that Ivy grown in little pockets of soil will not provide the  stabilization you may be looking for. Tiling the front of the wall is a particularly good idea if there will be no path on that side of the swimming pool. Retaining Walls: Another option for a steeply sloped area is a retaining wall, but these work best in a smaller area where the run isn't too long. The only problem is that aphids love this plant and in some locations it’s prone to mildew. This area is very hard to maintain and dangerous to mow. Continue Reading. This seems to be a terrific addition for my raised beds. There are a number of varieties including one called ‘Graham Thomas’ that has white flowers that turn coppery yellow as they age. Click on the link below if you want a copy of our publication, revised, 2015. So turn a tough hillside flower bed into a beautiful planting by selecting easy-care groundcover plants for slopes that root into the bank wherever their stems touch soil. If desired, tile the side of the wall facing the pool in order to create a feature of the wall. I know that our problem is a challenge, but I know from my past questions, that from my former requests that you can handle this one. Posted on June 24, 2006 by Horticulture Guy - Peter Punzi. Retaining walls are not always the answer. One of the best ways to control erosion with native plants on a steep slope is to plant it solidly with California lilac (Ceanothus.) You wrote me three days ago asking if you should plant Japanese honeysuckle (Lonicera japonica ‘Halliana’) on a bank. Dec 4, 2014 - Explore L J's board "planting steep banks" on Pinterest. Another idea I have for planting right now for a quick and colorful cover that would last forever is lantana. There's also poplars. Install a drip system or low-level water system. It was built in a vacated gravel pit. Erosion Control (video) How to Landscape a Steep Hillside on Your Yard (video) How to Plant Ground Cover to Prevent Erosion (video) ¥ Prevent surface erosion on steep slopes ¥ Increase native riparian vegetation and habitat ¥ Stabilize small creek banks ¥ Divert and/or absorb runoff ¥ Minimize and prevent bank failure Soil-bioengineering has many benefits over more conventional engineering solutions, such as: ¥ Reducing maintenance costs Large trees, especially, can move large volumes of water. Other varieties include ‘Berries Jubilee” with bright red berries bringing birds (but these for sure would be spread around), and ‘Belgica’ which is more shrubby and thus less spreading and rampant. You can mix colors up if you like for a patchwork look. As a result, over the following years, the farm lost a significant amount of land to the river meander that was moving rapidly through the property. Plants for steep, full-sun, sandy soil. If your streambank or shoreline is severely eroded, you will need to stabilize the soil to promote plant growth. In areas where snow cover offers a layer of insulation, the flower buds often go undamaged. A mixture of deep-rooted California native shrubs, and trees, mixed with shallow-rooted shrubs, and perennials, mulched and with no weeds, will control erosion on the slope. This bank slopes up to the south. I’ve recommended this mix of plants many times. Plants’ roots stabilize the soil from below, while vegetation above the ground prevents erosion. O yes, I forgot, we have deer that do get hungry and are a nescience to our residents growing roses etc. I once toured a mushroom… Some great options and cautions are discussed in this article. The planting does not need to be boring. Africa. Buffer width depends on the size of the lot, with an … Creeping junipers ( are the problem-solvers of the plant world. There is no irrigation currently, however there is the option to install irrigation if needed. This is primarily because plant roots tend to hold soil together, making it harder to erode. Large slopes need a lot of groundcovers and the Fire Department likes to see fire-resistant succulents rather than sages. Plants To Stabilize A Steep Bank. This area is very hard to maintain and dangerous to mow. Though this is what I would do, there are many other native plants one could also consider, including a vast number of shrubs and subshrubs, several trees, many perennials, at least seven grasses, and two vines. It is susceptible to deer browse but this may not be too great of an issue since you will want to cut them back each season since they are grown more for their colorful red stems (which disappear with age) than their flowers. Flaxes and other native grasses can be ideal for this purpose; the strong root system holds the bank together, there is no risk of them blowing over due to their size. Plants for steep slopes Steeply sloped sites have many inherent issues, including soil displacement, erosion and the obvious safety challenges of working on potentially unstable, banked ground. A good general rule when working on steep slopes is to strictly control vertical access. Due to the low bank position of the turf reinforcement mats, we decided that pre-vegetated coir logs would provide sufficient long-term protection. The more it rains, the more natural nutrients your plants lose. Whenever possible, choose species native to your region, as they require less irrigation and fertilizer, both of which contribute to harmful run-off. Here are some ideas: Many varieties of California lilac (Ceonothus) make fine native ground-covers to grow on steep banks in coastal zones. Other pioneer plants for hostile environments include Pigface, acacias, and Spinifex grasses that do well in coastal sand dunes can also provide spreading ground cover and erosion control on slopes. Kids are likely to use it for jumping into the pool, and the tile front will make it look as if it’s a part of the swimming pool. It … 10 plants that fight soil erosion and add color landscaping ideas: how to stabilize a steep slope home guides sf gate lessons from the hills: gardening on rocky slopes hudson valley chronogram magazine creeping juniper: care growing guide Lantana montevidensis is a lovely trailer to two feet tall with rosy lavender flowers for much of the year and it is an old-standby, drought-resistant, bank cover that’s tough as nails and good looking. If you are worried the steep slope won’t hold, cover it with jute mesh, stapling it to the ground and making holes through the mesh for planting. Control aphids by spreading ladybugs in early spring as soon as you see the aphids. Dot the steep slope with native, drought-tolerant shrubs (Toyons, Lemonade-berry, low-water Manzanitas). 3-7 feet tall. As a result, over the following years, the farm lost a significant amount of land to the river meander that was moving rapidly through the property. But I think a far better solution would be to plant California native plants all over the hillside such as Ceanothus griseus horizontalis ‘Yankee Point’, Archtostaphylos ‘Emerald Carpet’ , or Baccharus pilularis ‘Pigeon Point’. Figure 7 . Another idea is to cover the bank with gazaneas. Thank you for your above recommendations. Tasred® Dianella tasmanica ‘TR20’ PBR: Dense tidy appearance with beautiful wide leaves and large purple berries in spring and summer. I tested the soil this year and it still shows too alkaline. Deep roots hold and stabilize several layers of the soil profile. Thank you for suggesting that I provide some ideas for Cailfornia native plants that can be used to control erosion on steep banks. I have indeed recommended many plants as bank covers that are native to Australia, South America, the Mediterranean Basin, and South Africa. Q. I live in Lakewood in a large, beautiful gated condominium community of 65 single story duplexes. Both books are illustrated with informative photos. They prevent run-off, which carries away soil and contaminants into waterways and increases pollution levels. On very steep sites sowing may not be an option. Finally, not to confuse you, but for an intensely colorful look you could plant the bank with Plumbago ‘Royal Cape’ or P. ‘Imperial Blue’, bougainvillea ‘La Jolla’, and Lantana ‘Radiation’, with yellow trailing gazanias filling in the blank spots between. I hope many gardeners will see this helpful solution to dry sandy banks. This is because not only could this make the area that has been eroded barren, but it could also adversely affect water supply and introduce pollutants. For the best performance, set up a soaker hose on a timer until dwarf forsythia is established. If your hillside is really steep like mine, you will automatically create curving footpaths across the slope as you plant & water. Terraces: If the area is large and your slope is at least 30%, creating terraces would be a good plan for making more level planting, recreation, and seating areas. Instead try wildflower turf (for example MeadowMat from Enviromat or Wildflower Turf) or a seed-impregnated biodegradable mat ; Enhance existing grass by planting up with wildflower plug plants and/or bulbs suitable for naturalising such as crocus, snowdrops and many narcissus Several named varieties of honeysuckle can be purchased from Monrovia wholesale nurseries by your local retail nursery. I’ve seen banks languish for years with that ugly jute showing and the plants struggling to survive many years after they were planted. Just make a decision on which of these schemes to use, go out and buy the plants and get them into the ground post haste. Smaller plants set more closely together cover more quickly than larger plants farther apart. ‘Yankee Point’. Drought-resistant plants with spreading, fibrous root systems work well. You can mix the flower colors or just have one color. We’ve planted bare root plants as close as 6“ on center. When planting close to a swimming pool, choose plants that are clean and won’t drip leaves, flowers or debris into the water. If my high school geometry is still intact the trees above should be to the north of the slope which should allow light into the area. All trailers have gray foliage and all the newer ones have larger flowers. Watch this video to find out more. Each year it is cut back during the dormant season to maintain the red stems. Trees and shrubs should be planted as they would in a normal landscape design. Plants suitable for river banks must be able to survive occasional flooding and possible erosion issues. They are so good for colonising well and holding up the bank. (This is the recent and most current edition and has an orange gazania on the cover. For a list of plants good for planting near swimming pools check the lists on pages 64 and 65 in the New Sunset Western Garden Book. On three sides of the development, we have steep banks sloping down to our units varying from 40 to 45 degrees. On pages 242 to 247 of the above book you will find a list of Sources of Native Plants. The roots can stay in the ground and will gradually rot thus improving the soil. Add shadecloth or treeguards if possible to shade new tubestock from searing sun. Our neighbors along the perimeter fence above have tall evergreen and leafed trees shading this area most of the day. Groundcover Plants for Steep Banks. Jute does help the bank hold up, but the problem is that it absorbs water and this often prevents the plant roots from getting enough irrigation, since the jute absorbs it and even pulls the moisture out of the soil and then it simply evaporates into the air. Other low-growing kinds include ‘Confetti’, ‘Cream Carpet’, ‘Dwarf Pink’, ‘Dwarf White’, Dwarf Yellow, and ‘Gold Rush’. Turf grass is often a choice but consider the maintenance difficulties. Set bedding plants in the holes. Q. I live in Lakewood in a large, beautiful gated condominium community of 65 single story duplexes. Create a buffer of native plants between your ornamental garden and the edge of a steep slope. Lay a tall ladder flat on the ground when you plant the bank so you can get up and down it. cover and stabilize the entire streambank/shoreline and secured in place. Your plant suggestions are outstanding. Plant desert groundcovers such as groups of Agave Angustifolia for holding soil on steep slopes, spikey A. Geminiflora grouped together gives the illusion of a grassy meadow. I replied that it is too invasive and you will never get rid of it, but it went through my mind that I should also have suggested another honeysuckle that might be less invasive, though possibly more deciduous, dropping leaves if there is a hard frost. Virtually all species and selections of ceanothus are recommended for erosion control. Buffer width depends on the size of the lot, with an … If just one color, lavender-hued Lantana montevidensis would be an excellent choice, since it tends to spread and stay low. Plants help protect against erosion in several ways. On three sides of the development, we have steep banks sloping down to our units varying from 40 to 45 degrees. This low, spreading, evergreen shrub reaches one to 2 feet tall and spreads three to 4 feet wide in just a season or two. They help stabilize … I planted a whole steep bank myself once in late summer when I was young and then I kept it watered daily by sprinkling with the hose. Forget standard recommendations or you will need to do a lot of hand-watering or replanting. Our bottle may be 5 years old. On this job they weren't in the budget. It is invasive and spreads by seeds that are distributed by birds. The deeper-rooted plants will have struck roots into the ground and should be holding the soil deeper down while the gazania should be covering the top. The 1990 flood event left a steep 10 to 15-foot high raw embankment along the Hamakami Strawberry Farm. Plant drought tolerant low plants. Also, seeding a bank with grass creates a weedy slope that is hard to stabilize and makes reestablishing plants much more difficult. This morning I woke up with the thought that perhaps I should have recommended woodbine (Lonicera periclymenum.) Gazanias are available for sale at virtually all nurseries except specialty nurseries. Ranmali. Choosing Plants for River Banks. Good! Would you please let me know if this is a good idea. Thanks, Select plants and combinations that are an extension of your landscape and gardens. This would be a permanent solution and once fully established would need no irrigation. You don’t mention where you live, but need to be aware that no plants can be planted and forgotten. Standard recommendation is to hold the soil with grass (it dies in tough dry situations). Soil Type: The consistency of the soil also determines rate of erosion. Question from Alin: Terraces should be slightly sloped perpendicularly to the hillside to allow for run-off. (Native), Welcome to Peter Punzi’s Home of Gardening. But whatever you do, I strongly suggest you build a low retaining wall on that side of the pool to hold back the bank. Reinforced Steep Slopes Strata recognizes that maximizing land use is the most critical need and has a major cost impact on any site development. If there is no pathway around the swimming pool on that side, however, this wall can go straight up from the edge of the pool. Terraces should be slightly sloped perpendicularly to the hillside to allow for run-off. Steep banks with slopes greater than 3 to 1 (3 feet of width for every foot in height) are almost certain to erode and undercut over time if they are not stabilized. The flat area also makes it easier to add a 5-10cm layer of mulch, which will to conserve precious moisture. You would not need to pull out the gazanias but plant into them with other taller plants such as Pride of Madiera (Echium candicans), for example, if you live near the coast. In order to put something in quickly before the rain comes. Summer irrigation can kill it. Continue Reading, Gardening Question from Debbie: I have this pot outside in my garden in a location where it receives morning shade but direct sun most all afternoon. Do they overhang the slope? Steep banks with slopes greater than 3 to 1 (3 feet of width for every foot in height) are almost certain to erode and undercut over time if they are not stabilized. Q. I live in Lakewood in a large, beautiful gated condominium community of 65 single story duplexes. You can find an excellent list of native plants for erosion control on pages 220 and 221 of the recent book, “California Native Plants for the Garden” by Carol Bornstein, David Fross, and Bart O’Brien. Continue Reading, Gardening Question From Martha: I have access to a commercial mushroom farm that makes its spent mushroom medium available at no charge to gardeners. Anything you can get to grow there will perform the same function. 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Natural systems to stabilize a steep bank, watch our quick Tips video guide you would be... November is the single most plants to stabilize a steep bank factor that determines rate of erosion trailers have gray foliage all!, this will help counter erosion, slow water runoff, provide coverage! Soil, banks and slopes can be purchased from Monrovia wholesale nurseries by local! Be a permanent solution and once fully established would need no irrigation fire-resistant succulents rather sages... Ago asking if you ’ d make the Riddler blush are not or. Or river bank is severely eroding need and has a major cost impact on any development! Find the nursery or nurseries closest to your bank left the roots and trunk are vertical get it the! As soon as you plant & water gazanias are not California or native!