I grow several types of milkweed in my yard including asclepias tuberosa, asclepias speciosa, and asclepias incarnata. It is the incarnata, swamp milkweed, that has given us the most enjoyment.
I grow swamp milkweed in 2 locations. One is in full sun in normal garden soil. The other is in partial shade in a bog garden
I created the bog garden
by digging up a 4 x 3 foot area about 12 inches deep. I put a pond liner down and then replaced the soil. When it rains the liner keeps the area moist for a longer time, thus creating a bog.
The milkweed in the bog blooms in August when the monarchs are at their height. My family can sit on a nearby bench, watch monarchs sip nectar and then lay eggs under the leaves. We take the larger larva into the house to pupate so that we can tag and release the adults.
My other milkweeds bloom in the early summer. I have noticed that the later blooming milkweed draws more monarchs because of the nectar advertisement.
I hope that others will have the same enjoyment.