Planted 6 aster plants, which is a drop in the hat for the bees to pollinate. Each bee can visit 500 plants in a day. I would need acres of asters for them to get the pollen and nectar that they need. I live by a college that does research on crops, which ones do better in drought, wet weather etc. I just noticed that they planted half acre of late sunflowers, I'm sure when they head out or bloom,my bees will find them, only about a quarter mile away, which bees can fly up to 5 miles to look for food, but the more they fly the more their wings wear out, so better to keep the flowers and crops close.