I just read a post about Locust trees and wondered how significant the Catalpa trees are. Also, there are TONS of crown vetch in our area. Are these a good source of nectar? Which Locusts are the ones with the thorns? Is it the Honey locust? We have lots of those too. My bees didn't make it through the winter last year, so missed the flow. Have 4 hives this year and am hoping they make it!