Generally — Most Areas
inkberry (zones 6-12) suits most of Missouri (5b-8a) — zones 6-8 are in range, and the rest of the state is the exception.
Inkberry in Missouri — the short answer
Inkberry in Missouri: hardy in zones 6–12, full sun, against a state median of ~219 frost-free days.
- Plant zones
- 6-12
- 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
- Missouri zones
- 5b-8a
- USDA PHZM 2023
- Frost window
- Mar 27 - Apr 2 – Oct 31 - Nov 7
- NOAA RCC ACIS 1991-2020, 28°F
- Shortest county season
- 192 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.
Missouri spans zones 5b-8a, 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 inkberry against your parcel's actual hardiness, soil, and sun.
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Missouri is not one climate
Missouri’s winter-low ladder runs across 115 counties, from zone 5.5 in Atchison County to zone 7.5 in Pemiscot County. That is 20°F between the two counties’ average coldest night — the difference between inkberry overwintering in the ground and coming under cover.
The middle half of 115 counties runs 6–7 zones, with a median of 6.5 zones — a 2-zone span end to end.
Measured across 115 Missouri 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 Missouri Fits Best
Inkberry is rated for zones 6–12 — a cold floor USDA puts at -10 to 0°F. Against Missouri’s 115 counties that band holds in 110 of them, and the line runs at Adair County (zone 6a), the coldest county still inside it.
Inside zones 6–12
110 counties
- Andrew County · zone 6a
- Buchanan County · zone 6a
- Caldwell County · zone 6a
3 of 110 shown
Below the zone 6 floor
5 counties
- Atchison County · zone 5b
- Harrison County · zone 5b
- Nodaway County · zone 5b
3 of 5 shown
Winter cold is the limit here — the same plant works in a container that comes under cover.
County hardiness zones: USDA Plant Hardiness Zone Map (PHZM) 2023, per county. A zone is a 10°F band of average annual extreme minimum temperature, so the floor above is the band the plant's rating denotes, not a single measured kill point. Slope, shelter and cold-air drainage routinely move a site half a zone either way from its county figure — which is the part only your address resolves.
Even within Missouri's zones 5b-8a, county microclimates differ enough to change what thrives. These counties carry the closest zone match for inkberry (USDA PHZM 2023):
Zone Comparison
Inkberry Needs
- USDA Zones: 6-12
- Sun: Full Sun
- Mature size: 8 ft tall
- Picking window: ~28 days of harvest
- Drought tolerance: Low
Missouri Has
- USDA Zones: 5b-8a
- Last Hard Freeze (28°F): Mar 27 - Apr 2
- First Hard Freeze (28°F): Oct 31 - Nov 7
- Annual Rainfall: 34-50 inches
- Common Soils: Silt loam, Clay loam, Loess
Plant Zone Range (zones 6-12)
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 Inkberry in Missouri
The frost window
Across Missouri, the last spring hard freeze (28°F) clears between Mar 27 and Apr 2, and the first fall hard freeze lands between Oct 31 and Nov 7 (NOAA Regional Climate Centers ACIS, 1991-2020). Counting from the latest last freeze to the earliest first freeze, that's a 212-day window you can count on — up to 225 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
Missouri runs as cold as USDA zone 5, and no sourced winter-hardiness floor is on record for inkberry, so this page does not state whether it overwinters here — and gives no fall establishment date on the strength of a guess. Whether inkberry is a permanent planting or a replant-every-spring crop for you turns on your own zone within Missouri; 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 inkberry survives winter in part of Missouri, not across all of it. Whether the season is long enough — and warm enough — is a different question.
Chill hours
Inkberry requires ~400 chill hours (32-45°F dormancy window). Missouri typically banks ~2500 chill hours per winter (from PRISM 1991-2020 climate normals), which keeps this plant on track.
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
Inkberry likes near-neutral soil (pH 4.5-7). That's the common-ground band across Missouri's silt loam and clay loam — a soil test confirms it for your site. Drainage matters: this plant wants well (dry spells). If your Missouri 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. Missouri soil profile from USDA NRCS SSURGO. Site-specific verification: a 30-minute soil test from your local Extension lab.
What Else to Consider for Inkberry in Missouri
Zone compatibility tells you about winter cold survival — but Missouri growers also need to think about:
Highly variable weather with late frosts and early heat
Heavy clay soils in many regions
Ozark soils are thin and rocky
What to actually do about these — and the constraints that apply to every Missouri grower, not just inkberry — is covered on the Missouri growing guide.
Where in Missouri Inkberry Is Zone-Hardy
Inkberry is rated for USDA zones 6–12. 110 of Missouri’s 115 counties fall inside that band. The coldest that does is Adair County at zone 6a. 5 counties sit below the plant’s zone 6 floor, where an unprotected plant is relying on snow cover and a mild year. Where you are in Missouri decides this one.
Across those 115 counties Missouri’s winter-low ladder runs from zone 5b in Atchison County to zone 7b in Pemiscot County — 2 USDA zones of spread, which is 20°F between the two counties’ average coldest night of the year. That is why a statewide hardiness answer is where you start and not where you finish.
The planting window moves with it. Crawford County holds its last hard freeze (28°F) until about Apr 10, while Pemiscot County is clear by Mar 9 — 32 days apart. Set inkberry out on your county’s date, not the state’s.
County hardiness zones: USDA Plant Hardiness Zone Map (PHZM) 2023, per county. County last-freeze dates: NOAA Regional Climate Centers ACIS (1991-2020), county 28°F killing freeze — earlier than the folk 32°F "last frost". Inkberry’s zone 6–12 band: USDA PLANTS / Growable Ground plant database. A parcel report resolves your address’s own zone and frost dates rather than its county’s.
Pollinator + Wildlife Value
Inkberry draws honeybees and native bees (moderate value, Growable Ground Plant Database). Planting it near vegetable beds can lift fruit set on neighboring crops. Outdoors, inkberry can only work that bloom inside Missouri's frost window — roughly 219 days, opening after the last 28°F freeze (Mar 27 - Apr 2) and closing at the first (Oct 31 - Nov 7), per NOAA Regional Climate Centers ACIS, 1991-2020.
Missouri Cooperative Extension
For Missouri-specific cultivar recommendations, planting calendars, and pest pressure for inkberry, the canonical source is MU Extension. Their fact sheets carry the local trial data we can't generalize across 50 states.
Is Inkberry native to Missouri?
Inkberry is native to parts of the Lower 48, but the USDA PLANTS Database (accessed 2026-07-01) does not document a native range in Missouri. It can still earn a place in a Missouri garden — the zone comparison above tells you whether it will thrive.
Looking for plants that belong here? The Missouri growing guide lists USDA-documented natives for the state.
Native-range data: USDA PLANTS Database state-distribution records, accessed 2026-07-01.
Common Questions About Growing Inkberry in Missouri
When can I plant Inkberry in Missouri?
Missouri's last spring hard freeze (28°F) clears between Mar 27 and Apr 2, and the first fall hard freeze lands between Oct 31 and Nov 7 (NOAA Regional Climate Centers ACIS, 1991-2020). No sourced winter-hardiness floor is on record for Inkberry, so this page does not state whether it overwinters in Missouri 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 Inkberry grown in across Missouri?
Missouri spans USDA hardiness zones 5b-8a (USDA ARS PHZM 2023). Inkberry carries a range of zones 6-12, so the overlap zones are where outdoor growing is most reliable.
How many frost-free days does a typical Missouri site have?
A typical Missouri site sees ~219 frost-free days per year (derived from NOAA Regional Climate Centers ACIS, 1991-2020). Inkberry should be matched against that window, so check whether your local microclimate runs above or below the state average before settling on a planting date.
Is Inkberry native to Missouri?
Inkberry is native to parts of the Lower 48, but the USDA PLANTS Database (accessed 2026-07-01) does not document a native range in Missouri. It can still earn a place in a Missouri garden — the zone comparison above tells you whether it will thrive.
How should I amend the soil for Inkberry in Missouri?
Inkberry prefers pH 4.5-7 and well (dry spells) drainage (USDA PLANTS). That sits in the common-ground band across Missouri soils — a 30-minute soil test from a local Extension lab confirms it for your specific site.
Will Inkberry actually grow on my specific land in Missouri?
State-level zone + climate data is a sketch. A Growable Ground parcel report scores inkberry 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 Missouri
State-level data is a sketch. Your Growable Ground report scores inkberry against your parcel's exact soil, sun, drainage, and frost data — not zone averages.
Three things about your lot that Missouri inkberry averages can't show:
We read public map data around Missouri — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Missouri inkberry average
Explore More
Growing guides for inkberry
Explore Missouri county by county
Missouri carries 115 counties with their own USDA zone — a sample of the growing pages for inkberry there:
Where else inkberry grows
Inkberry's zone band crosses state lines — these are the states closest to Missouri in winter climate where it also has a page, plus the far ends of its range. Each one re-answers the question with that state's own record.
More to grow in Missouri
Missouri has a growing page for 893 plants — a rotating sample of the rest of the shelf.
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