In St. Louis, we finally have confirmation of the first monarch butterflies and hummingbirds. Margy Terpstra has a great blog which shows these recent sightings.
If you have some milkweed which you have started inside, now would be the time to put some out. I would probably leave it in the pot for a week or two since we still may have some freezing weather. For laying eggs, Monarchs don’t care whether it’s in the pot or in the ground. Group it together to make it easier for them to find.
Also start putting out your hummingbird feeder since they are also back in St. Louis. Margy has a great picture of them nectaring on Bluebells. It’s a great early season native flower.
Butterfly Gardening 
Does anyone have some milkweed plants that I could buy ?
I saw a few monarchs last year and I would like to help them.
Here’s where you can get some free seed. https://butterflygardening.wordpress.com/category/free/