For Monarks you should plant Milk Weed Lots of Milk weed even in the shady areas.
Milk weed is where the monarks lay their eggs. the Hatching catapillers eat the leaves which produce a nasty tasteing substance, so birds leave them alone after eatting one.
We have the normal Mid west Milk weed in the near by fence lines and ditches. They grow from seed to start but afterwards use rizones to spreed.
Swamp Milk weed we grow in the low area along the creek and around the pond. These we collect the pods for the seeds as that is the only way I know to grow them.
Kare and I have been raiseing milk weed for over 25 years. We lost a lot back in the winter of 2014/2015 I seem to remember when the polor vortex hit hard for a long time.
we had seed saved back so we could start it in pots and then set out to rebuild our milk weed.
the honey bees love the blooms too. We had out front door garden chock full of it. Sales people uninvited would stop by and start to get out of their car then get right back in because of all the honey bees coming and going.
When that bed died out Kare suggested we probably should not replant there just because of the UPS delivery people and a few others.
This is a good you tube to wtch if your thinking of raiseing Monarks. Lots of good information in it.
One of our Monarks catapillers got in the garage this year.
Al