An old favorite for
covering slopes and steep banks is the spreading juniper. Junipers
are known for their fast growth, adaptation to poor soil, and low maintenance requirements. These evergreen plants are usually spaced
three to four feet apart, with every other row being staggered for
even cover. Closer spacing requires more plants of course, but it
provides faster cover of the planting area.
Weed control is very important during the first
few years, while the junipers are filling-in and covering the slope.
Eventually, the plants will completely cover the planting area,
reducing the need for annual mulching and weed control.