Yes — Strong Match
Eastern gamagrass (zones 5-9) covers every zone Arkansas contains (6b-8b), so hardiness is not what limits it anywhere in the state.
Eastern Gamagrass in Arkansas — the short answer
Eastern Gamagrass in Arkansas: hardy in zones 5–9, part sun, against a state median of ~254 frost-free days.
- Plant zones
- 5-9
- Manual horticultural correction (source not retained); NC State Extension and Missouri Botanical Garden, with the remaining rows from other published sources or Growable Ground compilation
- Arkansas zones
- 6b-8b
- USDA PHZM 2023
- Frost window
- Mar 2 - Mar 20 – Nov 15 - Nov 23
- NOAA RCC ACIS 1991-2020, 28°F
- Shortest county season
- 226 days
- NOAA Regional Climate Centers ACIS, 1991-2020, county 28°F killing freeze
Plant data: Growable Ground Plant Database, compiled from FAO ECOCROP, USDA PLANTS and university Extension sources — per-field provenance varies and is published with the dataset.
Your yard isn't the whole zone.
Arkansas spans zones 6b-8b, but your yard sits in exactly one — and slope, tree cover, and cold-air pockets nudge it further. Enter your address and we'll score eastern gamagrass against your parcel's actual hardiness, soil, and sun.
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Arkansas is not one climate
Arkansas’s winter-low ladder runs across 75 counties, from zone 7 in Benton County to zone 8.5 in Union County. That is 15°F between the two counties’ average coldest night — the difference between eastern gamagrass overwintering in the ground and coming under cover.
The middle half of 75 counties runs 7.5–8 zones, with a median of 8 zones — a 1.5-zone span end to end.
Measured across 75 Arkansas counties. USDA PHZM 2023, per county. Quartiles are order statistics — every figure shown is a value a real county recorded, not an interpolation. Your own site sits somewhere inside this range; a parcel report resolves where.
Where in Arkansas Fits Best
Even within Arkansas's zones 6b-8b, county microclimates differ enough to change what thrives. These counties carry the closest zone match for eastern gamagrass (USDA PHZM 2023):
Zone Comparison
Eastern Gamagrass Needs
- USDA Zones: 5-9
- Frost-Free Days: 140+
- Sun: Part Sun
- Mature size: 6 ft tall
- Drought tolerance: Medium
Arkansas Has
- USDA Zones: 6b-8b
- Last Hard Freeze (28°F): Mar 2 - Mar 20
- First Hard Freeze (28°F): Nov 15 - Nov 23
- Annual Rainfall: 44-56 inches
- Common Soils: Silt loam, Sandy loam, Red clay
Plant Zone Range (zones 5-9)
Preferred Soil pH
Plant data: Growable Ground Plant Database, compiled from FAO ECOCROP, USDA PLANTS, and university Extension sources — per-field provenance varies and is published with the dataset. State data: USDA ARS PHZM 2023, NOAA Climate Normals, NRCS SSURGO.
When to Plant Eastern Gamagrass in Arkansas
The frost window
Across Arkansas, the last spring hard freeze (28°F) clears between Mar 2 and Mar 20, and the first fall hard freeze lands between Nov 15 and Nov 23 (NOAA Regional Climate Centers ACIS, 1991-2020). Counting from the latest last freeze to the earliest first freeze, that's a 240-day window you can count on — up to 266 days on a mild site in a kind year. That marks the hard freeze, not the last light frost, so tender transplants usually wait another 2-3 weeks.
Winter standing
Arkansas runs as cold as USDA zone 6, and no sourced winter-hardiness floor is on record for eastern gamagrass, so this page does not state whether it overwinters here — and gives no fall establishment date on the strength of a guess. Whether eastern gamagrass is a permanent planting or a replant-every-spring crop for you turns on your own zone within Arkansas; check its hardiness range against that before treating it as long-lived ground.
Frost window: NOAA Climate Normals 1991-2020. Plant timing fields: Growable Ground Plant Database — frost-free days from FAO ECOCROP, days to harvest from university Extension production guides, and growing-degree-day and chill-hour minimums that are compilation estimates rather than published figures. Your site's own frost dates can run earlier or later than the state range — a parcel report pins them down.
Growing Season Fit
The zone check says eastern gamagrass survives winter here. Whether the season is long enough — and warm enough — is a different question.
Frost-free days
Eastern Gamagrass wants 140+ frost-free days; a typical Arkansas site sees ~254 (NOAA Regional Climate Centers ACIS, 1991-2020). That leaves comfortable headroom for succession planting.
GDD and chill-hour figures are computed from PRISM 1991-2020 monthly climate normals; frost-free days from NOAA Regional Climate Centers ACIS, 1991-2020. Each is the state median across its counties (P25/P75 span the within-state spread). Hardiness-zone range is USDA PHZM 2023.
Soil + Drainage Fit
Eastern Gamagrass likes near-neutral soil (pH 5.5-7.5). That's the common-ground band across Arkansas's silt loam and sandy loam — a soil test confirms it for your site. It will grow across that whole span, but it does best between pH 6 and 7 — worth knowing before you decide whether a Arkansas soil test result is a problem or just a number. Drainage matters: this plant wants poorly (saturated >50% of year), well (dry spells). If your Arkansas site is heavier clay or sits in a low spot, raised beds or amendment with compost solve it.
Plant pH requirements: FAO ECOCROP and USDA PLANTS, with the remaining rows from other published sources or Growable Ground compilation. Drainage: FAO ECOCROP, with the remaining rows from other published sources or Growable Ground compilation. Arkansas soil profile from USDA NRCS SSURGO. Site-specific verification: a 30-minute soil test from your local Extension lab.
What Else to Consider for Eastern Gamagrass in Arkansas
Zone compatibility tells you about winter cold survival — but Arkansas growers also need to think about:
Hot, humid summers drive fungal and bacterial diseases
Heavy clay soils in parts of the Ozarks
Severe spring storms and hail risk
What to actually do about these — and the constraints that apply to every Arkansas grower, not just eastern gamagrass — is covered on the Arkansas growing guide.
Timing shifts within Arkansas
Eastern Gamagrass needs about 140 days of frost-free season to complete its cycle. Even Benton County — Arkansas’s shortest season at 226 frost-free days — clears that by 86 days, so season length isn’t the constraint anywhere in Arkansas. What varies is your own parcel.
County last-freeze dates and frost-free day counts: NOAA Regional Climate Centers ACIS (1991-2020), county 28°F freeze (earlier than the folk 32°F "last frost"). Eastern Gamagrass's 140-day requirement: USDA PLANTS / Growable Ground plant database (minimum frost-free days). A parcel report resolves your address's own frost dates.
Arkansas Cooperative Extension
For Arkansas-specific cultivar recommendations, planting calendars, and pest pressure for eastern gamagrass, the canonical source is University of Arkansas Cooperative Extension Service. Their fact sheets carry the local trial data we can't generalize across 50 states.
Is Eastern Gamagrass native to Arkansas?
Yes — the USDA PLANTS Database (accessed 2026-07-01) documents Eastern Gamagrass as native to Arkansas. Planting it supports the pollinators and wildlife that evolved alongside it.
Native-range data: USDA PLANTS Database state-distribution records, accessed 2026-07-01.
Common Questions About Growing Eastern Gamagrass in Arkansas
When can I plant Eastern Gamagrass in Arkansas?
Arkansas's last spring hard freeze (28°F) clears between Mar 2 and Mar 20, and the first fall hard freeze lands between Nov 15 and Nov 23 (NOAA Regional Climate Centers ACIS, 1991-2020). No sourced winter-hardiness floor is on record for Eastern Gamagrass, so this page does not state whether it overwinters in Arkansas and publishes no fall establishment date for it — check its hardiness range against your own zone before treating it as a permanent planting.
What hardiness zone is Eastern Gamagrass grown in across Arkansas?
Arkansas spans USDA hardiness zones 6b-8b (USDA ARS PHZM 2023). Eastern Gamagrass carries a range of zones 5-9, so the overlap zones are where outdoor growing is most reliable.
How many frost-free days does a typical Arkansas site have?
A typical Arkansas site sees ~254 frost-free days per year (derived from NOAA Regional Climate Centers ACIS, 1991-2020). Eastern Gamagrass needs 140+ frost-free days, so check whether your local microclimate runs above or below the state average before settling on a planting date.
Is Eastern Gamagrass native to Arkansas?
Yes — the USDA PLANTS Database (accessed 2026-07-01) documents Eastern Gamagrass as native to Arkansas. Planting it supports the pollinators and wildlife that evolved alongside it.
How should I amend the soil for Eastern Gamagrass in Arkansas?
Eastern Gamagrass prefers pH 5.5-7.5 and poorly (saturated >50% of year), well (dry spells) drainage (FAO ECOCROP). That sits in the common-ground band across Arkansas soils — a 30-minute soil test from a local Extension lab confirms it for your specific site.
Will Eastern Gamagrass actually grow on my specific land in Arkansas?
State-level zone + climate data is a sketch. A Growable Ground parcel report scores eastern gamagrass against your address's exact soil pH, drainage, sun, and frost-date data drawn from USDA SSURGO, NOAA, and PRISM — not state averages.
Check your specific parcel in Arkansas
State-level data is a sketch. Your Growable Ground report scores eastern gamagrass against your parcel's exact soil, sun, drainage, and frost data — not zone averages.
Three things about your lot that Arkansas eastern gamagrass averages can't show:
We read public map data around Arkansas — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Arkansas eastern gamagrass average
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Growing guides for eastern gamagrass
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