chokecherry buds started to swell today in zone 3b southern Manitoba

chokecherry buds started to swell today in zone 3b southern Manitoba, they’re the first trees I’ve seen start to wake up. this gets things rolling for a grafting project, I have a pile of scion wood to trial on chokecherry for compatibility, and about 50% is going to have an interstem that proved compatible last year. There’s 2 goals: 1. to find all compatible prunus on P. Virginiana, and to use them as interstems to make this prolific rootstock work for cultivars plums and other stone fruit around our property and to document the compatibility for others. 2. Developing a system to rapidly grow out cultivar softwood from limited scion material for rooting under mist. own root plums, cherries, apricots