Growing Gaillardia (Blanket Flower): A Complete Profile
By Growing Home Greens Team · July 18, 2026
Gaillardia — blanket flower — is one of the few heat-tolerant annuals here that stays put instead of sprawling across the bed. It forms a tidy 10-15 inch mound and just keeps blooming through the kind of summer heat that shuts down less tolerant flowers.
What to expect
Gaillardia can go in either as an indoor start (about 7 weeks before your last frost) or direct-sown a week after frost, seed set about 1/4 inch deep; it’s not fussy about which. At a full plant per square foot, it’s dense enough to use as a real groundcover-style planting rather than an occasional accent. Once established it shrugs off drought and heat that would stress most other flowers — it’s a common pairing with lantana in Arizona xeriscape beds for exactly that reason.
Common problems
Leggy, floppy growth is unusual for this plant and usually points to too much shade or too much water — gaillardia performs best lean and sunny, not pampered. Sparse blooming in the first year from seed is normal; give it full sun and don’t overwater rather than assuming something’s wrong.
Where this fits in your garden
Gaillardia isn’t linked to specific companions or antagonists in our data — see the full companion guide for gaillardia for how it’s tracked. Its compact, non-sprawling habit and 1-per-square-foot spacing make it easy to slot into a border or edge planting in the Garden Designer without it taking over neighboring squares.
Companion planting guide for Gaillardia (Blanket Flower) · Find your planting dates
Typically viable in USDA zones 3-10. Not sure your zone? Look it up by ZIP code.
Method: Either — Start indoors for an earlier harvest, or direct-sow outside for less fuss — Gaillardia (Blanket Flower) tolerates either.
See exact start-indoors, direct-sow, and harvest dates for your zone →
Spacing: 1 per square foot (square-foot-gardening spacing).
Varieties worth considering
- Arizona Sun — A 2005 All-America Selections Flower Winner — mahogany-red, yellow-edged blooms on a compact 8-10 inch mound, and it performed well from seed in its first year in AAS trials. A solid pick if you want a named variety instead of an unlabeled mix. (source)
Cited from the source shown next to each variety — we haven't grown these ourselves yet, so treat this as a research-backed starting point, not a personal endorsement.
Where to buy gaillardia (blanket flower) seeds
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See it growing
Search YouTube for "growing gaillardia (blanket flower)" videos → (a live search, not a hand-picked video — results vary and aren't vetted by us)