Asclepias tuberosa subsp. interior

Asclepias tuberosa subsp. interior

Native to:
Canada | ON, QC | Mexico | Mexico Northeast, Mexico Northwest | United States | AL, AR, AZ, CO, CT, FL, GA, IA, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, NC, NE, NH, NJ, NM, NY, OH, OK, PA, SC, SD, TN, TX, UT, VA, VT, WI, WV | Virgin Islands

Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Apocynaceae
Genus:
Asclepias
Species:
Asclepias tuberosa subsp. interior

Growth Characteristics

Growth Habit:
Geophyte
Height:
90 cm
Drought Tolerance:
High
Bloom Months:
jun,jul,aug,sep
Bloom Colors:
orange, yellow, red

Keystone Species Ranking

Caterpillar Keystone:
★★☆☆☆ Butterfly & moth species supported by this genus (NWF)

Garden & Ecology Notes

Wildlife Value:
bees, butterflies, hummingbirds, beneficial insects
Deer Resistant:
Yes
Fire Ecology:
Fire adapted — tolerates or benefits from fire
Fire Notes:
Deep taproot allows resprouting after fire or grazing. Fire removes thatch and stimulates vigorous flowering in prairie ecosystems.

Source: Claude claude-sonnet-4-5-20250929 Batch

Propagation & Germination

Stratification:
Cold/moist stratification required — 30–60 days
Germination Time:
7–21 days
Notes:
Seeds require light for germination. Sow on surface or barely cover. Stratification improves germination rates significantly.

Source: Claude claude-sonnet-4-5-20250929 Batch

ORGHPS Germination Guide: Should not need chilling

Source: Ontario Rock Garden & Hardy Plant Society