PlantFiles is getting a new look! Just in time for spring, we're rolling out a new look for the best online plants database. It will also work with your smart phones and mobile devices, so now you can take it with you on garden center visits or botanical garden tours. Questions or comments? Please post them here.

Zizotes Milkweed, Hierba de Zizotes, Longhorn Milkweed, Primrose Milkweed, Side-cluster Milkweed
Asclepias oenotheroides

Family: Apocynaceae (a-pos-ih-NAY-see-ee) (Info)
Genus: Asclepias (ass-KLE-pee-us) (Info)
Species: oenotheroides (ee-no-ther-OY-deez) (Info)
Synonym:Asclepias brevicornu
Synonym:Asclepias lindheimeri
Synonym:Asclepias longicornu
Synonym:Podostemma australe
Synonym:Podostemma lindheimeri

Category:

Perennials

Height:

12-18 in. (30-45 cm)

Spacing:

15-18 in. (38-45 cm)

Hardiness:

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:

Full Sun

Sun to Partial Shade

Danger:

Parts of plant are poisonous if ingested

Bloom Color:

Pale Yellow

White/Near White

Bloom Time:

Late Spring/Early Summer

Foliage:

Herbaceous

Other details:

This plant is attractive to bees, butterflies and/or birds

Average Water Needs; Water regularly; do not overwater

Soil pH requirements:

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:

Non-patented

Propagation Methods:

From seed; direct sow outdoors in fall

Direct sow as soon as the ground can be worked

Seed Collecting:

Allow seedheads to dry on plants; remove and collect seeds

Properly cleaned, seed can be successfully stored

Regional

This plant has been said to grow in the following regions:

Austin, Texas

Brownsville, Texas

Canyon, Texas

Harlingen, Texas

Los Fresnos, Texas

Magnolia, Texas

Midland, Texas

Rio Frio, Texas

show all

Gardeners' Notes:

1
positive
1
neutral
0
negatives
RatingContent
Positive

On Jul 29, 2008, Danny112596 from Los Fresnos, TX (Zone 10a) wrote:

Zizotes Milkweed is a great plant for a butterfly garden or just a decorative garden. This plant produces seed pods which contain many seeds and is a host plant for the Monarch Butterfly.

added: This Milkweed surprisingly transplants well! I transplanted one after it was mowed by accident and it is growing fast! All I did was give it plant food!

added: Also this plant grows in Zone 10. I am in zone 10 and Zizotes Milkweed grows wild here. It is a native.

Neutral

On Nov 16, 2006, frostweed from Josephine, Arlington, TX (Zone 8a) wrote:

Zizotes Milkweed, Asclepias oenotheroides, is native to Texas and other States.