Blueberry bushes

Someone told me they have to crosspollenate or something.
I mean do I have to plant 2 or 3 blueberry bushes together to get them to grow better and plant 2 or 3 plum trees together to make them grow better. I didn’t mean I wanted to plant the plum tree and the blueberry bush together.

My family and I went blueberry picking this morning and I was wondering what are some yummy blueberry recipes there are?
Please give the full recipe, like ingredients, and measurements…or put a link. Thanks(:
(we already know about blueberry pie…but we don’t have a recipe!):D

What will this do to my blueberry plant? Will the blueberries not grow now?
Well obvoiusly Im not going to have plants that are harmful to anyone. Im sure my kid is fine from eating the flowers. Don’t be so upset that my concern is not about my kid eating the flowers, they actually taste pretty [...]

Can I just bung half of them in the freezer.Do they freeze well?
I most certainly do Haz and I bung ‘em in my smoothies and the odd blueberry pie.

Why is it better to prune in late winter?

If you want to grow blueberries in your garden and you live in Southern California?