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.
Sowing it either way, and letting it get lean
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 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.
Floppy growth means too much water, not too little
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.
A border filler, not a companion pick
Gaillardia has no well-established companion pairings, and nothing it needs to be kept away from. 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.
Mature height: 1-1.5 ft
Method: Either: Start indoors for an earlier harvest, or direct-sow outside for less fuss. Either works.
When to plant gaillardia (blanket flower), by zone
Every zone gaillardia (blanket flower) grows in. Pick your zone in the header and it will be highlighted here. Each zone links to its full page.
| Zone | Start indoors | Sow or plant out | Bloom |
|---|---|---|---|
| 3a & 3b | Apr 11–Apr 18 | Jun 6–Jun 13 | Aug 25–Sep 1 |
| 4a & 4b | Mar 27–Apr 3 | May 22–May 29 | Aug 10–Aug 17 |
| 5a & 5b | Mar 22–Mar 29 | May 17–May 24 | Aug 5–Aug 12 |
| 6a & 6b | Mar 7–Mar 14 | May 2–May 9 | Jul 21–Jul 28 |
| 7a & 7b | Feb 20–Feb 27 | Apr 17–Apr 24 | Jul 6–Jul 13 |
| 8a & 8b | Feb 4–Feb 11 | Apr 1–Apr 8 | Jun 20–Jun 27 |
| 9a & 9b | Dec 28–Jan 4 | Feb 22–Mar 1 | May 13–May 20 |
| 10a & 10bFall window | Not usually | Sep–Nov | ~80 days after planting |
| Spring window | Not usually | Jan–Apr | ~80 days after planting |
Bloom dates are about 80 days after the sow or plant-out date, not after starting seeds indoors.
See exact start-indoors, direct-sow, and harvest dates for your zone →
How many Gaillardia (Blanket Flower) plants fit per square foot?
Spacing: 1 per square foot (square-foot-gardening spacing). Mature height: 1-1.5 ft.
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) Buy seeds: Burpee
- Mesa Yellow: The first F1 gaillardia grown from seed, a 2010 AAS winner that AAS notes as more uniform and floriferous than older varieties and specifically resistant to going loose and floppy. Solid yellow instead of Arizona Sun's red-and-yellow bicolor, on a slightly larger 16-18 inch mound. (source) Buy seeds: True Leaf Market
- Goblin: An older, seed-propagated dwarf at 12-14 inches with flat red rays tipped in yellow, per University of Wisconsin-Madison Extension. Shorter and more compact than either AAS winner above, useful for the front of a border rather than a solid block. (source) Buy seeds: Botanical Interests
Why each variety is listed comes from the source shown next to it. We haven't grown these ourselves yet, so treat this as a research-backed starting point, not a personal endorsement. The buy links are separate from those sources: they go to seed suppliers that sell that exact variety, and we may earn a commission on some of them.
Where to buy gaillardia seeds
True Leaf Market · Burpee (each supplier's gaillardia seeds)
The varieties we recommend above each have their own buy links, for the suppliers that sell that exact variety.
As an Amazon Associate we earn from qualifying purchases. Some links on this page also go to other retailers we may earn a commission from as an affiliate, at no extra cost to you. We only recommend products with a clear consensus of positive, independent reviews, or ones we bought and use ourselves. Each item on our gear page says which.
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)
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Growing Gaillardia (Blanket Flower): A compact, drought-tough bloomer that doesn't sprawl or flop the way most heat-loving flowers do.
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