How to Plant a Garden on a Slope

Growing plants on a slope has several disadvantages. The biggest being the soil is subject to erosion. Also, the soil on slopes often dries out quickly during the summer. With these and other problems, how can a gardener find success on a slope? The following tips will help the slanted garden thrive.

Instructions

Difficulty: Moderate

Things You’ll Need:

• Shovel
• Rake
• Mulch
• Stones, railroad ties, or wood blocks
• Drip irrigation equipment

1. These tips assume the area is free of existing plants and the soil has been prepared for planting (i.e. rototilled, raked, etc.).
2. Begin by standing back and looking at the slope. Try to imagine or pinpoint where terraces would be beneficial.
3. Railroad Ties Using your shovel, dig trenches in these areas for your terrace material. The depth depends on whether you are using rocks, wood, or other substance.
4. Form your terraces by filling in around the materials. There should be a drop-off just below the terrace and somewhat of a flat planting area above. Use your rake and, if necessary, more terrace building material to manipulate the site. You want distinct planting areas defined by smooth and small slopes (if any).
5. With planting areas defined, it is now time to plan the planting scheme. This part is exciting and totally up to the gardener. Use your best judgment on suitable plants and locations based on heights and spacing requirements.
6. The next step is to lay your drip irrigation system. Overhead watering on a slope should always be avoided. The water tends to run off and blow away easier. Your drip system, whether soaker hoses or individual emitters, should be set to provide enough water (slowly) to allow deep penetration of the root zone with minimal run off.
7. Cover the area with mulch. Wood chips, pine shavings, or any stable material should be laid on the entire area. This covering will increase moisture retention and prevent erosion during a rain storm. A 3-5” layer is generally sufficient.
8. Stand back and admire your work!

Tips & Warnings

• Stabilizing a slope with plants is an excellent way to reduce erosion.
• An easy garden for a slope can also be achieved by broadcasting wildflower seeds to cover the area.