[Objective] The objective of the study is to compare the effects of planting sedum plants in green roof substrates made of crushed brick and ceramsite in order to provide the reference for related research.[Methods] With two types of extensive green roof substrate mixed by using 5% distillers' grains

10% top soil

25% sand

compound fertilizer(4 kg/m3) and 60% ceramsite

or 55% crushed brick and 5% lime stone

we planted two popular Sedum species(Sedum sarmentosum

SS; Sedum Linare

SL) in them

and then investigated coverage and dry weights of plants

and nutrient content(total nitrogen

TN; total phosphorus

TP; and total kalium

TK) in substrate within 18 months.[Results] Plant coverage and dry weights from substrate made of crushed brick were greater or equal to those from substrate made of ceramsite

while the decreases of TP and TK in two substrates did not differ from each other significantly

TN in substrate made of crushed brick reduced less than substrate made of ceramsite. The coverage and dry weights of SS were significantly higher than those of SL.[Conclusion] Green roof plants grow better in the green roof substrate made of crushed brick than substrate made of ceramsite

and thus can replace ceramsite in mixing green roof substrate.