The four varieties purportedly grafted are shiro, satsuma, italian prune and some other mystery variety.
Shiro- these are the true prize of this tree. Frosty yellow with a heady perfume. I can only find conflicting data on the web:"ripens mid-August and is partially self-fertile."
"Extra-sweet, medium-sized clingstone fruits with bright yellow skin and crisp yellow flesh. Ripens in late July and early Aug. Pollinate with Santa Rosa.
Plum trees are naturally small and bear heavily. Plant them 10-20 ft. apart and water well. Japanese plums are vigorous and need another Japanese plum to pollinate them. European plums do not need a pollinator. "
Satsuma
Italian prune- Darkens black
A mystery variety, possibly Santa rosa maybe Beauty???
