I like zinnias. They can handle the weather in my area. I don't spray my yard. I encourage bumble bees to nest in the ground by leaving logs near loose soil in sunny areas. The queen bumble bees burrow under the logs and creates. I just mark where they build a nest and give them space. They are every active in my garden and help pollinate my berries. I am surrounded by them in the garden and have never been stung.