|how to plan landscaping on the slope for rock garden on the area 8x60 feet; I like to plant ornamental tree,shrub and small parenials.the slope facing north-east side.|
|Start with a sheet of paper and a pencil. Draw out the dimensions and then draw bubbles or circles where you'd like to have shrubs and trees. Perennials can go where you think they will look best and you can plant them after you install your trees and shrubs. Groundcover is a good choice for controlling erosion, and can be installed last.
Daylilies or iris are good choices. You might also consider the following low water use, low maintenance plants: Shrubs include amur maple Acer ginnala, Japanese barberry, quince, smoketree, Scotch broom, witch hazel, privet, buckthorn, sumac, and yucca. Groundcovers include yarrow, crown vetch, sweet William, daylilies, Potentilla, lavender cotton, creeping phlox and St. Johnswort. Many of these plants come in a variety of flower and leaf colors, heights, thorniness, etc. depending on the species. Choose the species that will provide the features and ultimate size appropriate for the site you have chosen. These plants will tolerate dry, poor soil conditions such as you'd find on a slope; however, as with any new planting, they will need to be watered until they are established. Best wishes with your landscape!