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Milkweed for Monarchs

Thank you for joining us on this path to help save such an iconic and important species! Reserve your seed starter kit by filling out the online form or ask a librarian now through April 10th.

Pesticide use and destruction of habitat have led to a critical decline in the number of Monarch butterflies. While adults can feed off of flower nectar from various plants, eggs are only laid on and caterpillars only feed on milkweed plants.

There are several varieties of milkweed that are native to and suitable for Colorado’s climate. We are offering 3 color varieties and two species, Asclepias speciosa and Asclepias tuberosa that should thrive here. These will not spread via underground rhizomes like Swamp/Common Milkweed.

You may or may not get blooms the first year. This is normal! If the greenery comes up healthy, but you don’t have flowers, you will likely get blooms the second year. Monarch eggs/caterpillars will still benefit from the greenery!

All flowers have the potential to become invasive if you do not maintain them. To prevent unwanted spread, cut off pods before they dry out and burst open.  If you would like to save the seeds, wait until the pods dry out on the plant (with a little squeezing, they should “pop” open when ready). Gently remove the seeds and allow them to dry out on a plate for a week or two before storing. You may discard the “fluff”.  Store in a cold place over winter to aid germination.