With some close looking, it's possible to tell them apart, even without flowers. And Borage leaves have that wonderful cucumber scent! But I can see how there could be mistakes in gardens that have both plants, especially because both plants reseed themselves and move around the garden. And if friends or family helped in the garden, but didn't pay the same attention, there could be issues. I've read article after article in medical journals that document that happening in gardens. Whole families and friends ending up in the hospital, or worse.

At least blackberries are a lot more distinctive! I'm glad you get to enjoy so many -- and all that jam! Blackberry jam is just about the best! And isn't it nice to have extra on hand for gifts. That's a good reason to grow them or go foraging for them, too.