Flowers

How to Grow Blanket Flower: Planting, Spacing, Care & Bloom

Quick answer

Perennial types: start indoors 6 to 8 weeks before last frost (WI). Annual types: 4 to 6 weeks. Transplant annuals just after last spring frost. Fall direct sow for Indian blanket (NC). Leaves can cause contact dermatitis — wear gloves (WI).

Blanket flower at a glance

PlantStart indoors: 8–6 wk before last frost; Transplant: last frost
SunFull sun; well-drained; drought/heat tolerant (NC/WI).
WaterWill not survive water-logged soils (NC pulchella).
SpacingNC pulchella: height about 1–2 ft; width about 10 in–1 ft.
Days to bloomSummer into fall bloom (WI/NC)
-9-8-7-6-5-4-3-2-1LF+1+2+3
■ Start indoors   ■ Plant out   ■ Harvest
Weeks relative to last frost (LF). Colored weeks show when our ZIP planner schedules each step.
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Updated

Safety: Wisconsin: leaves contain lactones that can cause contact dermatitis in susceptible people — wear gloves. (Wisconsin blanket flower) NC recommends protective gloves for fuzzy hairs / skin irritation on perennial types.

Blanket flower / Indian blanket (Gaillardia pulchella annual; G. aristata perennial / hybrids).

Indian blanket flower
Indian blanket (Gaillardia pulchella). Photo: Apanasevich Maxim, Wikimedia Commons, CC BY 4.0 (resized).

Sourced from university extension guides. For dates where you live, use the ZIP planting planner.

Planting timing

Wisconsin: “For perennial types, start indoors about 6-8 weeks before the average last frost… and start annual types 4-6 weeks before the average last frost. Transplant annuals outdoors just after the last spring frost; set perennials out a bit later.” Annual seed: scatter on the soil surface (needs light). (Wisconsin blanket flower) NC G. pulchella: “Plant seed in the fall by direct sowing and lightly raking in.” (NC State Gaillardia pulchella) Planner default: Start indoors (perennial) last frost −8 to −6; Transplant last frost 0. Annual indoor start −6 to −4. Fall direct sow for Indian blanket is seasonal.

Depth and spacing

NC pulchella: height about 1–2 ft; width about 10 in–1 ft. NC aristata: height 1–3 ft; width 1–2 ft; space 12 inches–3 feet. Surface sow annuals (WI).

Sun, soil and water

Full sun; well-drained; drought/heat tolerant (NC/WI). Will not survive water-logged soils (NC pulchella). Overwatering/poor drainage → root rot (NC aristata).

Care

Deadhead optional but prolongs bloom (WI). Cut back to 6 inches late summer may improve winter survival (WI). Divide spring or early fall every 2–3 years (WI). Leave some seed heads for goldfinches (NC/WI).

Bloom

Summer into fall (WI). Pulchella: spring to first frost (NC). Aristata: long bloom season (NC).

Pests and diseases

NC: aphids, thrips; powdery mildew, leaf spot, aster yellows; root rot if wet. Cultural: avoid overwatering; do not mound mulch against the plant; remove infected plants; avoid sprinkler irrigation for bacterial leaf spot (Penn State Gaillardia diseases).

Related: ZIP planner · organic pest control

Frequently asked questions

When do I start blanket flower?

Perennials 6 to 8 weeks before last frost; annuals 4 to 6 weeks; set annuals out at last frost (WI). Fall direct sow for Indian blanket (NC).

Annual or perennial?

Both — G. pulchella annual; G. aristata perennial (NC/WI).

Do I need gloves?

Yes if you are sensitive — contact dermatitis from leaf lactones (WI).

Sources