First, always buy cherries with the stems on. The stem acts like a little plug, keeping moisture in and bacteria out. If the stem is missing, that cherry is on a fast track to mush town.
Second, store them in the fridge unwashed. Wash cherries right before eating, because moisture encourages mold. Also, line your produce drawer with a paper towel—it absorbs extra condensation and keeps them crisp for days longer.
Properties of cherries – Botanical online
Finally, if you’re pitting them for a recipe, wear an apron or old clothes. And use a paperclip if you don’t have a pitter—just unfold it, stick the bent end into the stem hole, and pop the pit out. MacGyver-approved cherry hack right there.