My master gardener wife plants flowers for the butterflies and bees. Lots of them.
She plants a lot of the milkweed that is a favorite for the monarchs. I pointed out two of the caterpillars, but look near the bottom of that photo, on the leaf. See the black stuff, that is all caterpillar poop. They will strip the leaves from most all of the milkweed.
She has other plants for many other types of butterflies.
This is another view of the same garden area. The purple flowers are something the bees love. That bush and other she has sound like an overloaded transformer at times as it is literally buzzing with bees. We found two guys that raise bees just a mile away, and they give us some free raw honey for feeding so many bees. She gave them some cutting of the purple flower bush for their yards.
Different view of the same garden earlier in the spring.
One bush-tree she has in the corner of the yard is a favorite of the adult monarchs as they migrate. Last fall I was mowing back there, and it is kind of freaky having dozens of butterflies flying around my head. I know with 100% certainty that can't sting or bit me or hurt me, but just the swarm of them as I try to mow the area is just a bit freaky.
Time to go and mow the yard again.