Abstract:

Abstract：Crassulaceae plants Sedum Sarmentosun Bunge，Sedum Lineare Thunb，Rrhodiola root and the Herba Sedi Sarmentosi were made as the objects of study．After 4 years，the result showed that the ill resistance，Pest Resistance，Grass Resistance，cold resistance and coverage rate in winter were all improved in composite community compared with the single community．The Sedum Sarmentosun Bunge showed the most powerful aggressiveness，and the Rhodiola root showed the most powerful resistance．The single community of Herba Sedi Sarmentosi could not live through the winter，but when it was planted in a composite community，it could live through the winter. Rhodiola root could be used when a color design want to be made，and it also could be used as a separation stuff when the color patterns wanted to be kept long． Key words：Roof Greening　　　color collocation Crassulaceae Plants