If you live in the southern United States and need a ground cover to use between flagstone stone Dichondra is one of your best options.
Dichondra is a small leaf, warm season perennial native to southeastern state. It will typically grow to only 1 – 4 inches tall so requires very little maintenance. Dichondra does not take foot traffic very well but it is ideal as a filler between flagstone. It establishes quickly and spreads to provide a thick cover over an area.
The ideal planting season varies quite a bit by region. Most areas in the United States will want to plant in late spring to early summer. The rule of thumb is to plant when the ground temperature is in close to 75 degrees.
Prep Your Flagstone Area
We recommend using a 1/4 minus stone as a bed and initial filler between your flagstone. Leave about 1/2″ to 1″ from the stone top. Lay a small bed of peat moss in the trough between the stones and sprinkle Dichondra seed into the area. It is recommended to use about 1 lb to cover a 300 – 400 square foot area. Since you are only filling in the cracks, (or possibly a border area) 1 pound of seed will cover a much larger area.
Initial Seeding and Germination
Once you have seeded the area cover the exposed seed with another thin layer of peat moss.
The peat moss is important to keep the seeds moist during their initial germination. Lightly mist the area to keep the peat moss moist during the first 5 – 7 days. Don’t over water during the initial germination.
After Germination
After the seeds germinate, deep water the area to encourage deep root growth. Deep watering is difficult with flagstone but can be achieved by setting a hose on the high side of the flagstone. Trickle water for 2 – 3 hours once a week to achieve a deep root base. Deep roots ensure your plants stay healthy during periods of low water and will also help prevent bugs, fungus, and other pests.
You may want to cut the plant back during the first month to encourage a thicker growth.
Maintenance
Dichondra keeps a low ground cover making it not necessary for frequent maintenance. You can mow or use a weed whacker to keep the plants nicely trimmed. Remove the clippings after each cutting from the area to lower the likely hood of mold or bugs moving into the area.