Ambler, Alaska, sits in USDA hardiness zones 3a-4b — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
On paper, cabbage, potato, rhubarb, and kale all suit these conditions — on the ground, soil, sun, and drainage make the final call.
Even in Ambler, no two yards are alike.
A low spot, a south-facing slope, or a stand of trees moves the frost date and sun across a single Ambler lot. Enter your address and we'll score 1,112 plants against your land's actual soil, sun, and frost.
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
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Quick Facts
USDA Zones
3a-4b
Last Frost (state avg.)
May 1 - Jun 15
First Frost (state avg.)
Aug 15 - Oct 1
City Area
7K acres
Hardiness Zone Range
Growing Season
Zone maps are averages across Ambler. Your yard's slope, trees, and frost pockets shift what actually grows — see your land's exact reading.
Soil varies lot by lot — soil types explained.
What Grows in Ambler
Plants matched to Ambler's USDA zones 3a-4b — each links to its full growing profile.
Growing Challenges in Alaska
What an experienced grower plans around here — each one has a move.
Extremely short growing season (70-110 frost-free days)
A high tunnel or greenhouse is standard Alaska practice — it turns 90 outdoor days into a real growing season.
Permafrost prevents deep root growth in many areas
Raised beds lift roots above the cold and warm weeks earlier in spring — the proven northern workaround.
Limited soil development in glacial terrain
Start with a soil test to see what glacial ground actually has, then build up with imported topsoil and steady compost.
For cultivar selection, pest pressure, and planting-time guidance specific to Alaska, the UAF Cooperative Extension Service is the authoritative local source.
Environmental Check
No contamination sources found near Ambler
We checked 9 federal environmental databases and found no recorded contamination sites in this area. A clean starting point for growing.
Your Specific Parcel Matters
Ambler Average
- ●USDA Zones 3a-4b
- ●Generic soil type for the area
- ●State-average frost dates
YOUR Parcel
- ✓Your exact hardiness zone
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Ambler
Pull a site-specific report for your exact address in Ambler, Alaska — soil, sun, drainage, frost risk, and scored plant recommendations.
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
Key Growing Facts for Ambler, Alaska
- USDA Hardiness Zones: 3a-4b (USDA PHZM 2023)
- Last Spring Frost (state avg.): May 1 - Jun 15 (NOAA 30-Year Climate Normals)
- First Fall Frost (state avg.): Aug 15 - Oct 1 (NOAA 30-Year Climate Normals)
- Land Area: 7K acres (US Census TIGER 2025)
Zone data: USDA ARS Plant Hardiness Zone Map 2023. Climate data: NOAA NCEI. Boundaries: US Census TIGER/Line 2025.
Frequently Asked Questions
What hardiness zone is Ambler, Alaska?
Ambler sits in USDA hardiness zones 3a-4b, per the USDA Plant Hardiness Zone Map 2023. Zones reflect average annual extreme minimum temperatures from 1991–2020 weather data.
When does frost risk typically end in Ambler?
Ambler follows Alaska's statewide frost window: last spring frost around May 1 - Jun 15 and first fall frost around Aug 15 - Oct 1, per NOAA 30-year climate normals (1991–2020). Frost dates shift with elevation and local microclimate, so watch your own site's cold pockets.
What vegetables grow in Ambler?
Ambler's zones 3a-4b support a wide range — strong performers include Cabbage, Potato, Rhubarb, and Kale. What actually takes on any one site comes down to its soil, sun, and drainage, and we score each plant against the real conditions at your address.
Which hardiness zone is Ambler, really?
Officially, Ambler sits in USDA zones 3a-4b (USDA PHZM 2023) — but a zone is a 30-year average of winter's coldest night across an area, and it can't see any one yard. A south-facing slope, a tree line, or a low frost pocket can shift a single site by half a zone either way, which is why neighboring gardeners often quote different numbers. We read the conditions at your exact address — soil, sun, slope, and frost — and score 1,112 plants against what's actually there.
Is the soil safe to grow vegetables in Ambler?
No database can certify soil, but the federal record here is clean: we checked all 9 federal contamination source types and found no documented sites within the search radii around Ambler. That means nothing is on record — not that the land is certified clean — so a one-time soil test is still the way to know your own yard's history.
How do I protect my plants from frost in Ambler?
As the season closes around Alaska's first fall frost near Aug 15 - Oct 1 (NOAA 30-year climate normals (1991–2020)), a few moves buy time: cover tender plants with floating row cover or an old sheet on still, clear nights, water the soil the afternoon before a freeze so it holds warmth overnight, and harvest frost-tender crops like tomatoes, peppers, and basil before the first hard night. Hardy greens and root crops shrug off light frost and often sweeten after it, so leave them in.
Everything on this page is a Ambler average. Your yard writes its own version — we read soil, sun, drainage, and frost at your exact address. Try it for 14 days — no card required.