Where to buy native milkweed in Austin

The honest answer first: the Austin nurseries we checked publish no live inventory of native milkweed, so we can’t tell you who has antelope horns in stock this week. What we can give you is what we found when we read sellers’ own pages on 23 September 2026, where the native plant sales are, and the two questions to ask before you buy. Stock changes weekly. Call ahead.

What we found on 23 September 2026

Native American Seed (Junction, Texas; seed by mail). Its product pages for antelope horn (Asclepias asperula) and green milkweed (Asclepias viridis) both listed the seed as in stock on 23 September 2026. No zizotes (Asclepias oenotheroides) product appeared among the 126 items in its wildflower-seed pages that day. Its retail-partners page lists The Natural Gardener in Austin.¹

Far South Wholesale Nursery (Central Texas; a wholesale grower that says on its own site: “We are now open to the public, but be advised we have a very small sales staff because we are typically a wholesale operation”). Its catalog lists all three host milkweeds: “Milkweed, Antelope Horns,” “Milkweed, Spider/ Green” (A. viridis) and “Milkweed, Zizotes (green antelope horn).” On the availability list we read on 23 September 2026, none of the three had stock listed; swamp white milkweed, Texas milkweed and butterfly weed each showed #3 pots. The site gives no street address, so we say only that it is in Central Texas.²

The Lady Bird Johnson Wildflower Center’s Fall Native Plant Sale runs “October 9 – November 1” in 2026, “Fridays – Sundays.” The sale page publishes no species list, so it says nothing about which milkweeds will be offered.³ The Center’s own plant database records green milkweed and butterfly weed as commercially available.⁴⁵

That is the whole list. We did not phone anyone, and we don’t name a nursery as stocking a plant unless we saw it listed. If you know a retail nursery in Austin that grows native milkweed, tell us, and we’ll check before we add it.

Why plant sales are a good place to look

Monarch Watch: “The best places to find pesticide-free native plants are at local nurseries or at plant sales hosted by local environmental organizations, native plant societies, or Extension Master Gardeners.”⁶ The reason is the second question below.

Two questions to ask at the counter

The Latin name. “Green milkweed” is used for two different species, and the milkweed most widely sold at nurseries is tropical milkweed, the one to avoid.⁷⁸ Ask for Asclepias asperula, Asclepias viridis or Asclepias oenotheroides by name.

Was it treated with an insecticide, and which one? Some nursery plants are treated with systemic insecticides, which the plant absorbs, so the leaves themselves can poison caterpillars. The Xerces Society: “It is unfortunately not possible to tell from visual inspection whether a plant contains systemic insecticides. Before buying milkweeds or other pollinator-attractive plants, we strongly recommend asking nursery or garden center staff whether the plants have been treated.”⁹ Monarch Joint Venture says the same: “Ask if they were treated with any pesticides, and if so, which ones.”¹⁰ A 2024 study found that insecticides used on ornamental milkweed “can cause monarch larval mortality up to 4 wk after treatment application.”¹¹ Xerces adds that “nurseries that grow their own stock, especially smaller local native plant nurseries, will be in a better position to provide such details.”⁹ If nobody can tell you, grow from seed.

Seed

Seed is the way around both problems. The Xerces Society’s advice: “use seed that is sourced as locally to your property or project site as possible,” and “only plant milkweed species that are native to your area.”¹² The Native Plant Society of Texas: “Fall is the best time for planting milkweed seeds.”¹³ Green milkweed and zizotes seed sown at other times want a soak overnight and 14 to 30 days of cold, damp stratification in the refrigerator first, in the Wildflower Center’s instructions.⁴¹⁴ If you start seed indoors, use a deep pot: a 2015 article in Texas Parks and Wildlife’s Eye on Nature newsletter says to plant “in a deep container (most species have a long taproot)” and to “be patient: it may take a milkweed several years to reach reproductive maturity.”¹⁵

What this page will never do

It carries no paid placement; no nursery paid to be here. It will not say a nursery “has” a plant we did not see listed. Stock changes, and the dates above are the last day we looked.

Which milkweed to ask for: Best milkweed for Austin. When to have it in the ground: the Austin calendar.