A new graft cactus (Chamaecereus silvestrii f. variegata) cultivars “ellow Ttree”was developed at Cactus Research Institute, Gyeonggi-do A.R.E.S. in 2007. GC013001 and GC0110703 were crossed in 2005 and we got 42 seedlings from this combination. After pedigree selection in 2005, one cultivar were finally selected through the test of specific character in 2007 and named as “ellow Ttree” “ellow Ttree”has cylindrical shape of yellow color with 13～14 ribs. Formation of its offshoots is concentrated on the lower part of the plant. This cultivar is able to produce 13.9 offsets shoots per plant and its offshoots are hard.

A new graft cactus Chamaecereus silvestrii cultivar “Doldol” was developed from a cross between C. silvestrii cv. “Bosong” and C. silvestrii breeding line “ICS07” by in vitro grafting and line selection at National Horticultural Research Institute, Rural