Zizotes Milkweed
Asclepias oenotheroides
- Native to:
- Costa Rica, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, United States
Tyler Cannon





Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Apocynaceae
- Genus:
- Asclepias
- Species:
- Asclepias oenotheroides
- USDA Symbol:
- ASOE
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Forb/herb
- Height:
- 60 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- High
- Bloom Months:
- may,jun,jul,aug,sep
- Bloom Colors:
- white, green, cream
Wildlife Benefits
- Bees:
- ★☆☆☆☆ Documented bee visitation (GBIF)
- Butterflies & Moths:
- ★☆☆☆☆ Documented Lepidoptera association (GBIF)
- Caterpillars:
- ★☆☆☆☆ Recorded caterpillar host plant (HOSTS Database)
Keystone Species Ranking
- Caterpillar Keystone:
- ★★☆☆☆ Butterfly & moth species supported by this genus (NWF)
Host Plant for Caterpillars
⚠️Monarch butterfly (Danaus plexippus)
Reported Fauna Sightings
Moths:Salt Marsh Moth (Estigmene acrea) Butterflies:⚠️Monarch butterfly (Danaus plexippus), Queen butterfly (Danaus gilippus)
Garden & Ecology Notes
- Wildlife Value:
- butterflies, bees, Monarch butterflies
- Deer Resistant:
- Yes
- Fire Ecology:
- Fire adapted — tolerates or benefits from fire
- Fire Notes:
- Resprouts vigorously from rootstock after fire or top removal. Common in fire-maintained prairie ecosystems.
Soil Requirements
- Soil Type:
- well-drained, rocky or sandy soil
- pH:
- 6.0 - 8.0 (neutral to slightly alkaline)
- Drainage:
- excellent drainage required
- Moisture:
- dry to moderate
- Notes:
- prefers open, sunny locations
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–60 days
- Germination Time:
- 7–21 days
- Notes:
- Seeds require light for germination. Surface sow or barely cover. Germination improved with cold stratification.
The above propagation data sourced from Claude AI
Pre-treatment: Cold-moist stratification for 30 days at 1–5°C (34–41°F).
Notes: Seeds require cold-moist stratification for 30 days before germination.
Source: Claude AI
ORGHPS Germination Guide: Should not need chilling