Cotton is an annual or perennial grown for its blooms, which open in spring and return year after year. It's hardy across USDA zones 8 through 11 and shrugs off deer. Its spring flowers are a moderate draw for honeybees and native bees. It roots deep, which helps it reach moisture in a dry spell and open up tight soil as it establishes.
Cotton — the short answer
Cotton: grown in zones 8–11, full sun, pH 5–8.5.
- USDA zones
- 8–11
- Not verified
- Soil pH
- 5–8.5
- FAO ECOCROP
- Sun
- Full Sun
- Converted from FAO ECOCROP
Plant data: Growable Ground Plant Database, compiled from FAO ECOCROP, USDA PLANTS and university Extension sources — each tile names its own row's source, because per-field provenance varies.
Score Cotton on your exact land.
Zone averages can't see the slope, soil, frost, and sun that decide whether cotton actually takes — and those shift from one yard to the next. Enter your address and we'll score cotton against your land's real conditions.
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What Cotton is
Cotton grows as an annual or perennial and reaches around six feet at maturity. It blooms in spring. It's also deer-resistant.
Mature height, bloom period and deer resistance: We haven't confirmed this against a published source yet.
How to grow Cotton
Cotton grows in USDA zones 8 through 11. Cotton does best in full sun — at least 6 hours of direct sun a day — and soil from pH 5 to 8.5, on well-drained ground. It needs a growing season of at least 180 frost-free days, which is why climate matters as much as soil.
USDA Zones
8-11
Not verified
Soil pH
5 - 8.5
FAO ECOCROP
Sun
Full Sun
Converted from FAO ECOCROP
Drainage
well (dry spells)
FAO ECOCROP
Minimum Growing Temperature
59°F
Below this it stops growing rather than dies — a pace limit, not a survival limit.
FAO ECOCROP
Mature Height
6 ft
We haven't confirmed this against a published source yet.
Frost-Free Days
180+
The frost-free stretch it needs start to finish — short-season areas may need an indoor head start.
Growable Ground plant catalog
Start the season right
Plant cotton in full sun with at least 6 hours of direct sun, once the soil has warmed and frost risk has passed. We haven't confirmed this against a published source yet.
Match the soil
Cotton prefers pH 5 to 8.5 (FAO ECOCROP). A quick soil test from your local Extension lab tells you whether to add lime or sulfur to land in band.
Water steadily
Keep the root zone evenly moist through establishment. We haven't confirmed this against a published source yet. A 2–3 inch mulch layer holds moisture without waterlogging.
Harvest at its peak
Cut cotton blooms in the cool of the morning, just as they open, for the longest display.
Where Cotton thrives
Cotton is hardy across USDA zones 8 through 11. Zone is only the starting point, though: the soil pH, drainage, and frost dates on your specific land decide how well it actually does.
A USDA zone is a 10°F band of average annual extreme winter minimum, so zones 8–11 spans average winter lows from 10°F to 50°F (USDA PHZM 2023). Across the 50 states and DC, that band covers 1 outright and splits 27 more down the middle — and which side of that line your land sits on changes the answer.
Zones 8–11·Where Cotton growsOpen map →
This map is derived from the USDA ARS / PRISM Plant Hardiness Zone Map (2023) and is not the official USDA Plant Hardiness Zone Map.
Where Cotton stands, state by state
Cotton is rated for zones 8–11 — a cold floor USDA puts at 10 to 20°F. Across the 50 states and DC, 1 sits fully inside that band, the line runs through 27 more, and 23 sit outside it — and inside every split state, the same line runs on at county grain.
The line runs through
27 states
- Alaska · zones 1a-9a
- Idaho · zones 3b-8a
- California · zones 4b-11a
3 of 27 shown
Cotton’s band covers part of each of these states — which side of the line your county sits on changes the answer, and each state page draws it.
State zone extents: USDA Plant Hardiness Zone Map (PHZM) 2023. A zone is a 10°F band of average annual extreme minimum temperature, so a state that splits the band contains the boundary — its own page draws the county line, and a parcel report resolves which side your land sits on.
What grows around Cotton
Growing guides for cotton
Good to know
One caution for pet owners — cotton is toxic to dogs and cats (moderate severity). Keep it out of reach, and call ASPCA Animal Poison Control at (888) 426-4435 in an emergency. (Source: Cornell Poisonous Plants Database.)
Cotton offers moderate value to bees and other pollinators. We haven't confirmed this against a published source yet.
Your land is one point inside Cotton's range
This page resolves to the species. Your state page draws the county line, and a report reads the parcel — the soil pH, drainage, sun, and frost dates on your exact ground, which no species average can see.
See if Cotton will thrive on your land
Zone averages are a start. Your soil pH, drainage, sun exposure, and frost dates shape whether cotton actually takes. We score it against the mapped and modelled conditions at your address.
Three things about your exact spot that zone averages miss:
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources analyzed in seconds
How we know this about Cotton
The figures above are cited per row, not per site: the pH band names this plant’s own source column, the three temperature figures each carry their own, and days-to-maturity cites the publication that actually lists it. All of it comes from the Growable Ground Plant Database — a compilation over FAO ECOCROP, USDA PLANTS, and university Extension sources, published openly with per-field provenance.
Grounded inUSDA PLANTS Database
Frequently asked questions
Can I grow Cotton in my zone?
Cotton grows in USDA hardiness zones 8 through 11. Zone is one factor — soil pH, drainage, and frost dates on your specific parcel also shape whether it takes.
When should you plant Cotton?
Most growers plant cotton after the last spring frost, once the soil has warmed, leaving enough of the season for its 180-day frost-free need. Your local frost dates set the exact window — a Growable Ground report reads them for your address.
How much sun does Cotton need?
Cotton needs full sun — a spot that catches at least 6 hours of direct summer sun a day. We haven't confirmed this against a published source yet. In more shade it still grows, but usually gives a smaller, later crop. The catch is that a yard rarely gets even light everywhere — a fence, the house, or one tall tree can quietly take those hours. A Growable Ground report reads the real sun-hours across your land, canopy and buildings included, so you can pick the brightest bed before you plant.
What soil does Cotton need?
Cotton prefers soil pH 5 to 8.5, on well-drained ground (FAO ECOCROP). Your report scores your parcel's mapped soil against that using USDA SSURGO data.
Does Cotton attract pollinators?
Yes — cotton's flowers are a solid nectar source for honeybees and native bees. We haven't confirmed this against a published source yet.
Is Cotton safe for pets?
Cotton is toxic to dogs and cats with moderate severity. Keep it out of reach, and call ASPCA Animal Poison Control at (888) 426-4435 in an emergency. (Source: Cornell Poisonous Plants Database.)
Keep exploring Cotton
Cotton state by state
Every state cotton's zone reaches — 18 link straight to that state's cotton growing page; the rest open the state's full growing guide.