Wednesday, June 10, 2015

Asclepias incarnata or Swamp Milkweed

And the last of our Asclepias we are trying is Asclepias incarnata.  From Prairie Moon Nursery where we got our seeds:  Rose Milkweed, is also commonly called Red Milkweed, Marsh Milkweed, or Swamp Milkweed.  That lovely vanilla fragrance you detect coming from large rosy pink flowers possibly hosting several Monarch or Swallowtail butterflies is Swamp Milkweed.  This deer-resistant plant grows in moist to average soils, and blooms in July and August.  Later, large pods form which will break open to reveal seeds that will float away in the wind. If growing Rose Milkweed from seed, try fall planting - or if planting in spring be sure to first moist-cold stratify the seeds for a month.  Large numbers of Rose Milkweed can often be seen growing in wetland settings.

These seeds were started the same way as our other milkweeds - 30 days stratification using the coffee filter method.  Our main propagation page is linked here.  At the end of that period we met and potted up our seeds, placing about 3-4 seeds in a pot.  We used deep pots anticipating that they will need to stay in the pots for quite a while to show enough growth to plant.  Since they will have a tap root and dislike disturbance we want to move them only once now.  Some were potted up in early May and the remaining in early June. 

June 10, 2015
Plants are in my holding area awaiting distribution to some of our membership.  Hopefully all will survive over the summer with some TLC. 

Asclepias incarnata.
Two pots showing a little growth.


End of summer 2015
As summer ends our members are putting their milkweeds to bed for the winter.  Those that have our seedlings from June still in pots will mound with a thick pile of mulch to ensure that the roots don't freeze and die over the winter.  Those that are planted in the ground will be cut back to the ground and given an extra layer of mulch for protection.  Hopefully when spring arrives we will see new sprouts, lots of growth, blooms for the first time and monarch caterpillars in the fall.

Below are a few photos sent by various members.

Judy planted hers in her front yard.

Debbie's is next to her water garden and
is very happy!



1 comment:

  1. Two photos today of Asclepias incarnate from seed in member's gardens. Thank for sharing Judy and Debbie!

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