Cherry twins

Can anyone here confirm that heat plays a part in producing more twins on cherries? We had record heat for June here in Salt Lake City area. It’s the only factor I can think of why we got so many more this year. And it wasn’t just me, but I noticed the same thing with another cherry a couple miles away from me.


I have never seen them before. Pollination?

If so, why so many this year?

I mean, I think I recall them in years past, but maybe 1 or 2. This year was crazy for the amount!