I am having issues with some Milkweed plants we have. They are planted in a spot where they receive full sun from about noon on. The plants were all purchased from a local nursery just a few weeks ago, and were planted right away. We planted them in a mix of topsoil and organic compost/garden soil and about a week later covered with mulch. In the evening they were looking a bit sad and droopy along with the Tickseed and Calamint I planted them with. Once they were watered, they perked right up.
Then I noticed my 2 of 4 of my Cinderella Milkweed (same as Swamp Milkweed?) started getting some yellow leaves, very fragile to the touch, and then they fell off starting from the bottom of the plant up. I have 3 of what I think is common Milkweed and it's doing just fine. I can't figure it out. Please help a girl (and her milkweed) out!
Allegheny County Pennsylvania
Are there specific varieties of milkweed you would recommend for this spot in our garden to replace the swamp milkweed when we move them?