That's a great education tool! I think in Kansas it would be April. Right now we have dandelions, henbit, and creeping charlie in bloom.
There is an educational program here that is drawing attention. It's a Callery Pear buy back program. Different organizations have joined forces to offer a native tree for a picture of a Callery pear you have cut down. They are so invasive and offer nothing for birds and insects. Our strong winds break the limbs and split trees.
I believe my next door neighbor planted 2 of them last fall. :'(