How to Grow Butterflyweed
Butterflyweed
Asclepias tuberosa
flowerButterflyweed is a vibrant, native perennial wildflower with brilliant orange, yellow, or red clustered flowers that attract monarchs and other pollinators. A drought-tolerant plant with a deep taproot, it's a key host plant for monarch butterfly caterpillars. It's an excellent addition to native plant gardens, meadows, and xeriscape landscapes.
When should you plant Butterflyweed in your zone?
Get a personalized planting timeline — when to start seeds, transplant, and harvest — based on your USDA zone and local frost dates. Free to start.
Example Butterflyweed timeline · Pittsburgh, PA (Zone 6b)
-
Plant Butterflyweed
Around Apr 17Near Pittsburgh's average last spring frost.
-
Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
-
First Butterflyweed blooms
Mid-to-late summerBefore the first fall frost (≈ Nov 8)
Sample dates for Pittsburgh, PA. Sign up to get exact Butterflyweed dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 3-9; most robust in zones 4-8
Sign up free to see if Butterflyweed grows in your zone — and get a personalized planting timeline.
Get my Butterflyweed timeline →Growth Stages
Seed Dormancy & Stratification
1-3 monthsSeeds require cold stratification over winter to germinate; dormancy is essential for viability
Stratify seeds in refrigerator for 30 days before sowing in spring, or sow directly in fall for natural winter stratification
Seedling
3-4 weeksTiny seedlings emerge with first true leaves; plants are delicate but develop the characteristic taproot early
Keep soil lightly moist; do not overwater. Avoid transplanting if possible due to sensitive taproot; sow directly in permanent location
Vegetative Growth
8-12 weeks (first year); resumes in spring of second yearPlant develops multiple stems and lance-shaped, alternate leaves; forms bushy mound of foliage
Taper off watering gradually as plant establishes deep root system. No fertilizer needed; avoid high-nitrogen amendments. Mulch lightly around base
Flowering
6-8 weeks (typically June-August)Dense, flat-topped umbel clusters of bright orange, yellow, or reddish flowers appear at stem tips; flowers attract monarchs and other pollinators
Deadhead spent flower clusters to encourage more blooms, or leave seed pods for wildlife and self-seeding. No supplemental water needed if established
Seed Production & Dormancy
6-10 weeks; dormancy through winterGreen seed pods develop after flowering; pods split open when mature to release winged seeds; foliage dies back in fall
Allow seed pods to mature and dry on plant for natural reseeding and to feed wildlife. Cut back dead stems in late fall or early spring
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
-
Generally harmless; tolerate as part of local ecosystem. Hand-pick if populations are excessive. Avoid broad-spectrum pesticides that harm monarchs.
-
Spray with strong water jet or insecticidal soap. Plant attracts natural predators. Avoid systemic pesticides that harm monarch caterpillars.
-
Increase humidity; spray with water. Use miticides only if infestation is severe. Rarely problematic on established plants.
-
Prevent with excellent drainage. Do not overwater. Remove affected plants if rot occurs.
Uses
Monarch Butterfly Host Plant
WildlifeButterflyweed is one of the essential food sources for monarch butterfly caterpillars. A single plant can support multiple caterpillar colonies, making it crucial for monarch conservation. [source]
Traditional Herbal Tea
CulinaryHistorically used by Native Americans and herbalists to create medicinal teas. The root has been traditionally brewed for respiratory and circulatory support, though modern use requires caution and expert guidance. [source]
Cut Flower Arrangements
HouseholdLong-lasting, vibrant orange clusters make striking fresh flower arrangements. Butterflyweed also dries well for dried arrangements and floral crafts. [source]
Pollinator Magnet
WildlifeAttracts bees, butterflies, hummingbirds, and other beneficial insects. Serves as critical nectar and pollen source throughout its blooming season. [source]
Seed Pod Crafts
CraftDistinctive silvery seed pods are attractive dried specimens for dried arrangements, wreaths, and craft projects. Seeds disperse naturally for ornamental, autumn garden interest. [source]
Harvest Tips
Harvest flowers in mid-morning after dew dries for fresh arrangements; cut long stems just above leaf nodes to encourage branching. For seed collection, allow pods to dry fully on plant in late summer/fall, then harvest dry pods and store in cool, dry place. Seeds remain viable for 3-4 years.
Fun Facts
- 🌱 Butterflyweed gets its common name because monarch butterfly caterpillars feed almost exclusively on milkweed plants, including this species. The bright flowers also attract adult monarchs for nectar.
- 🌱 Unlike most milkweeds, butterflyweed lacks the milky sap and instead has a clear juice, making it easier to handle in flower arrangements without the messy latex.
- 🌱 The plant has a deep taproot system that can extend 2-3 feet into the soil, making it extremely drought-tolerant but difficult to transplant—direct seeding is strongly recommended.
Gardening Terms
New to gardening? Learn about terms used in this guide:
Join 30,000 gardeners planning their gardens with LizPlants.
Get your personalized Butterflyweed planting timeline
Tell us your zip code and we'll calculate exactly when to start Butterflyweed seeds, transplant seedlings, and harvest — based on your USDA zone and local frost dates. Includes calendar reminders and printable task lists. Free to start.
Get my Butterflyweed timeline →