I have some milkweed seeds that I’d be glad to share. The seeds are Tropical Milkweed, Asclepias curassavica.
Plant the seed so it is slightly covered and keep warm and moist to start. If you start these inside, you can get a a head start on spring. I like to start my seeds inside in March. Plant outside when all danger of frost is gone – usually around May 1st in St. Louis Missouri. Tropical Milkweed does not like cooler temperatures, so there is not advantage to planting it early.
Another option is to plant the seeds in the soil and let them come up naturally.
May 1st would be the earliest I would plant in my area.
If you plant too early, the seeds will rot in the ground.
These seeds also do very well in pots. You can put 20 to 30 seeds in a 12 inch pot.
Please send a SASE – Self-Addressed Stamped Envelope to:
Free Milkweed Seeds
9016 Robyn Rd
St. Louis, MO 63126
The best way to start these seeds is with bottom heat. The seedlings on the right have bottom heat.
80 degrees and seeds slightly covered seems to be the best. I did put the plastic top on this to keep in the heat and moisture.