Select them, where possible, from northern sources. A natural mulch over the root area helps delay freezing of the soil in the fall and aids in retainiog soil moisture. Shrub Establishment Use the list of shrubs provided here as a guide to select those most adaptable to elevation and exposure. The list does not take into consideration the wide range of climatic and soil conditions possible at a given elevation. The list includes a notation on special moisture and drainage conditions for best performance and survival.
Some plants perform better in the shade, some in full sun.
Length of frost-free period. Some shrubs may survive at a given elevation but not produce flowers or fruit due to a short frost-free period. Plant shrubs as early in spring as possible. Avoid fall planting. The condition of nursery-grown stock at planting time is important.