Eino Kenttä wrote:That's interesting! My parents, in Sweden, also had an insane bumper crop of plums. It seems like 2021 was the plum year, both for Sweden, the US and NZ. Wonder why? Or maybe it's coincidence? Anyone on here from Asia or South America growing plums? To see if it's global 
That is interesting. Seems coincidental to me but I plead complete ignorance as it relates to larger Earth systems. My plum crops have been so terrible that I gave up on them years ago. I was mowing nearby and happened to notice that the trees were loaded down with fruit. Harvested the first tree the next day.
The one thing I will say regarding my general observations is that bush berries and wild fruit trees like mulberry, wild plum, and chokecherry seem to be consistent producers annually while all the fruit tree cultivars are sporadic at best. My wild crabapple trees produce heavily every two years like clockwork while I get peak harvests of regular apples, pears, tree cherries every 4-5 years at best. For plums the 2021 harvest was my best harvest ever. Plums have been so poor that I have been thinking of getting rid of the trees and putting something else in their place. With apricots I get a bumper harvest every 10 years or so (literally wheelbarrow loads of fruit) and sporadic, mediocre harvests inbetween. Apricots have an excuse as they bloom so early and rarely are there any pollinators out yet. I am okay with such poor harvests because the apricot trees are so beautiful when in bloom. They earn their keep with their beauty.
I have been wanting to get a couple honeybee hives to aid in pollination as I know bee populations are down here, but cost is prohibitive and last thing I need is to take on another project. I have done well over the years just bartering for tree fruit from locals and I always end up with what I need. I have been planting flowers around the orchard and berry patches to attract pollinating insects. I have to wonder, though, if my production issue is due to lack of pollinators then why do the berry bushes and wild fruiting trees do well every year?