Stop it, just stop it, with the drug and water-addicted yards. Don't make me go on about water supplies, pesticide run-off, and the rest of it. Plant native plants. Or just don't mow for a bit and see what comes up.
All the plant photos on this post - butterfly weed, giant ironweed, green dragon - they're native plants that grow in my yard pretty much all on their own. Many of them are host or nectar plants for butterflies. And most of them can be found at Saturday's (March 31st) Spring Native Plant Sale at Morningside Park here in Gainesville.
If you're a member of our Paynes Prairie Chapter of the Florida Native Plant Society or Friends of Nature Parks, you can come to the private Friday night sale. If you aren't, come anyway and join on the spot.