I think the problem is less so identifying plums and cherries and more so identifying that they are not something which looks like a plum or cherry but is poiso

I think the problem is less so identifying plums and cherries and more so identifying that they are not something which looks like a plum or cherry but is poisonous. I know what common fruits look like; I don't know which fruits don't have poisonous doppelgangers in my region.