I have three blueberry plants that my dad purchased a while ago. He said he got at least two of them because they pollinate each other well but he doesn't remember any of the variety names for the three. We've never gotten much blueberries from any of them and haven't really tended to them much. As I'm getting into gardening I want to get more fruit, how should I best take care of them and learn what varieties they are? This year at least two of them have a lot of flowers, though some of the tips of the stems have dried up. Not sure why.
Two of them have been placed on opposite ends of a wine barrel planter. And the third is fairly close in a smaller barrel container. I'm thinking I might have to place them in their own containers eventually, but I don't have much space. So if I have to separate the plants from the wine barrel, what's the smallest container I can give each one?