Suitable rootstock enhances apple tree resilience. In 2021, we studied “Buckeye Gala” ( Malus domestica var. Buckeye Gala") on nine rootstocks with contrasting vigor in NS and BC, Canada. Rootstock effects vigor, yield, midday stem water potential were significant BC. After sustained heat events, the large-dwarfing Geneva 935, 4814, 969 had lower ratio of sunburn fruits, resulting higher projec...