When to Plant Gaillardia (Blanket Flower) in Iowa

Gaillardia (Gaillardia aristata), the native blanket flower of the American West, is one of the most floriferous and longest-blooming perennials available — producing cheerful, daisy-like flowers in fiery red, orange, and yellow combinations from early summer through hard frost in most climates. Named for the way its spreading colonies mimic the patterned blankets of Indigenous American weavers, gaillardia thrives in the exact conditions that challenge other perennials: poor, dry, gravelly soil in full sun. An outstanding pollinator plant, attracting bees, butterflies, and finches that feed on its seed heads. Somewhat short-lived (3–5 years) but self-seeds freely to sustain garden colonies.

Iowa spans USDA hardiness zones 4b, 5a, 5b, 6a (with planting data available), so planting dates vary by your location within the state. Click your zone below for the most accurate dates.

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Click your county for exact Gaillardia (Blanket Flower) planting dates based on your local frost dates.

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Gaillardia (Blanket Flower) Planting Calendar for Iowa

▸ Zone 4b ~155 day growing season · Full guide →

Last frost: May 1 · First frost: October 3 · 155 day season

Activity	When	Date Range
Start Indoors	March 6	Mar 6 – Mar 20
Transplant Outdoors	May 15	May 15 – May 29
Direct Sow	May 15	May 15 – Jun 5
Bloom	July 24	Jul 24 – Oct 30

▸ Zone 5a ~166 day growing season · Full guide →

Last frost: April 25 · First frost: October 8 · 166 day season

Activity	When	Date Range
Start Indoors	February 28	Feb 28 – Mar 14
Transplant Outdoors	May 9	May 9 – May 23
Direct Sow	May 9	May 9 – May 30
Bloom	July 18	Jul 18 – Nov 7

▸ Zone 5b ~178 day growing season · Full guide →

Last frost: April 18 · First frost: October 13 · 178 day season

Activity	When	Date Range
Start Indoors	February 21	Feb 21 – Mar 7
Transplant Outdoors	April 25	Apr 25 – May 9
Direct Sow	April 25	Apr 25 – May 16
Bloom	July 4	Jul 4 – Oct 24

▸ Zone 6a ~193 day growing season · Full guide →

Last frost: April 10 · First frost: October 20 · 193 day season

Activity	When	Date Range
Start Indoors	February 20	Feb 20 – Mar 6
Transplant Outdoors	April 17	Apr 17 – May 1
Direct Sow	April 17	Apr 17 – May 8
Bloom	June 26	Jun 26 – Oct 30

Growing Tips for Iowa

Start seeds indoors 6–8 weeks before last frost or direct-sow after last frost. Seeds need light to germinate — press onto soil surface without covering, or cover very lightly (1/8 inch). Transplant after last frost when soil has warmed. Lean, well-drained soil is essential — rich or wet soil causes sprawl and root rot. Deadhead spent blooms to prolong the season, but leave some heads for self-seeding to renew the planting. Divide every 2–3 years in spring to maintain vigor. Drought-tolerant once established; overwatering is more damaging than underwatering. Year 2+ plants deliver the fullest multi-season bloom.

Gaillardia (Blanket Flower) in Other States

Frequently Asked Questions

When should I plant Gaillardia (Blanket Flower) in Iowa?

Planting dates for Gaillardia (Blanket Flower) in Iowa depend on your USDA zone. Iowa spans zones 4b, 5a, 5b, 6a. Check the planting calendar above for your specific zone's frost dates and planting windows.

What zone is Iowa for planting?

Iowa contains USDA hardiness zones 4b, 5a, 5b, 6a. Your specific zone depends on your location within the state — northern and higher-elevation areas are in colder zones, while southern and coastal areas are warmer.

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