Purple Milkweed Vine

Name: Pollinator Patch
Author: Pollinator Patch

Matelea biflora

Last reviewed: August 2026

Matelea biflora is a slender milkweed vine of dry prairies, caliche outcrops, and brushy grassland in the southern Great Plains. It flowers from March into August, drawing butterflies and bees to its small purple blooms.

Toxicity unknown

Purple Milkweed Vine (Matelea biflora) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.

Light

full sun

Water

low

Size

6"–24" H × 12"–24" W

Bloom

Mar, Apr, May, Jun, Jul, Aug

Native to

NM, OK, TX

Pollinators

butterflies, bees

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Browse plants for this ecoregion

High Plains Southwestern Tablelands Central Great Plains Cross Timbers Edwards Plateau Texas Blackland Prairies

Purple Milkweed Vine is a low-growing native perennial that spreads as ground cover or climbs nearby plants. It produces small purple flowers from spring through summer and goes dormant in winter. This drought-tolerant vine works well in naturalized areas and wildlife gardens.

Growing Purple Milkweed Vine

Grow Purple Milkweed Vine in full sun and low water. Mature plants reach 6 to 24 inches tall and spread 12 to 24 inches wide. Expect low maintenance to keep it looking intentional in a front yard.

In an HOA neighborhood

Purple Milkweed Vine takes more care to keep looking intentional in a front yard. Maintenance level: low. Consider it for backyard or mid-zone beds rather than the street edge.

Works well in: backyard only.

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Wildlife value

Serves as a host plant for monarch butterfly caterpillars and attracts various butterflies and bees to its nectar-rich flowers.

Common questions

When does Matelea biflora bloom?: Matelea biflora typically flowers from March through August, with small purple blooms appearing along the twining stems during the warmer months of the growing season.
What pollinators visit Matelea biflora?: Butterflies and bees are the main visitors to the flowers of Matelea biflora, foraging on the nectar produced by its small star shaped blooms.
How much water does Matelea biflora need?: This vine is adapted to low water conditions and does well in dry, well drained soils typical of grassland and rocky sites. It does not need regular irrigation once established.
How much sun does Matelea biflora need to grow well?: Matelea biflora grows best in full sun and can tolerate some part sun, especially in hotter climates where a bit of afternoon shade can reduce stress on the plant.
Is Matelea biflora a climbing or trailing vine?: It is a slender, twining vine that grows low along the ground or scrambles over shrubs and grasses rather than climbing tall structures.
Is Purple Milkweed Vine HOA-friendly?: Purple Milkweed Vine takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.

These answers were drafted with an AI model from this plant's data. Verify care details with a local expert.

Native range data from the World Checklist of Vascular Plants (Kew). Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

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Common plant problems, and what to check first

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Common questions

When does Matelea biflora bloom?

Matelea biflora typically flowers from March through August, with small purple blooms appearing along the twining stems during the warmer months of the growing season.

What pollinators visit Matelea biflora?

Butterflies and bees are the main visitors to the flowers of Matelea biflora, foraging on the nectar produced by its small star shaped blooms.

How much water does Matelea biflora need?

This vine is adapted to low water conditions and does well in dry, well drained soils typical of grassland and rocky sites. It does not need regular irrigation once established.

How much sun does Matelea biflora need to grow well?

Matelea biflora grows best in full sun and can tolerate some part sun, especially in hotter climates where a bit of afternoon shade can reduce stress on the plant.

Is Matelea biflora a climbing or trailing vine?

It is a slender, twining vine that grows low along the ground or scrambles over shrubs and grasses rather than climbing tall structures.

Is Purple Milkweed Vine HOA-friendly?

Purple Milkweed Vine takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.

These answers were drafted with an AI model from this plant's data. Verify care details with a local expert.

Common plant problems, and what to check first

See all plant problem guides