Practical planning tools for short growing seasons.

Climate-based bean planting guide for Anchorage, Alaska

When to Plant Beans in Anchorage

Beans are more marginal in Anchorage because the season is workable but not roomy. Timing, variety speed, and warm placement usually need to be part of the plan.

Typical Planting Window

Borderline in this climate

Use the planting dates below for beans in Anchorage.

Typical planting window May 1 – May 15
Method Direct sow
Typical days to maturity 50–65

Beans are usually sown directly outdoors around May 8, with a typical local planting window of May 1 to May 15. Most varieties need about 50–65 days to reach maturity.

Beans are possible in Anchorage, though this is the kind of crop where the margin is narrow enough that small choices start to matter a lot.

Compared with many Alaska locations, Anchorage usually reaches the planting season for beans a bit earlier.

Best local strategy: Sow as early as conditions safely allow and lean toward faster-maturing varieties.

Can Beans Mature in Anchorage?

Growing degree days measure how much useful warmth the season provides. For warm-season crops like beans, GDD helps show whether local heat accumulation is usually strong enough for the crop to grow steadily and finish before fall.

Available GDD (base 50) 740
Typical crop GDD target 900
Heat margin -160

From the usual planting window, Anchorage typically provides about 740 growing degree days for beans. With a typical crop target of 900, that leaves a heat margin of -160. That narrow heat margin means small delays or slower varieties can quickly reduce the odds of timely maturity.

When Is It Too Late to Plant?

When planting later than usual, this table shows how much growing degree day heat is still available from each point in the season. As planting gets pushed back, the remaining heat drops and the crop becomes less likely to mature on time.

Checkpoint Remaining GDD Heat margin Fit vs typical target
Apr 15 740 -160 Usually short
Jun 1 727 -173 Usually short
Jun 15 667 -233 Usually short
Jul 1 546 -354 Usually short

How Different Bean Varieties Affect Results

In Anchorage, very early and early bean varieties are usually the safest choice because they leave the least room for the season to turn against you. Slower classes are much less forgiving here.

Varieties that often fit well here include:

  • Provider — a dependable early bean often chosen where cool starts and shorter seasons are common
  • Mascotte — compact and relatively quick, making it useful where gardeners want a fast return

Best Bean Varieties for Anchorage

Bean variety choice in Anchorage is mostly about bush versus pole habit, harvest speed, pod type, plant size, and how much warm-season runway the crop needs.

May 1 local season starts September 29 frost pressure returns
Less heat used 740 GDD available

Hover or tap the dots to see which recommended varieties use that much local heat.

For Anchorage, start with Provider and Mascotte for beans when you want early reliable bush beans or compact early bean harvests.

Compare each variety’s heat need and maturity timing against the local frost-free window before choosing what to grow.

Recommended starting point

Provider Very early
725 GDD needed 740 available before frost
May 1 September 29
Tight fit
Why this fit?

Local season fit: Provider leaves about 15 GDD cushion against the normal Anchorage crop heat estimate.

Best for: early reliable beans.

A dependable early bean that is useful where cool starts, variable conditions, or shorter seasons are common.

Tradeoff: Practical more than specialty.

Mascotte Very early
725 GDD needed 740 available before frost
May 1 September 29
Tight fit
Why this fit?

Local season fit: Mascotte leaves about 15 GDD cushion against the normal Anchorage crop heat estimate.

Best for: compact early harvests.

A compact bean that gives gardeners a quicker return and works well where space or season length is limited.

Tradeoff: Not the choice for tall pole-bean production.

GDD comparisons are a planning shortcut, not a guarantee. Soil, watering, sowing depth, pests, transplant quality, and harvest goals still affect the final result.

Varieties that didn’t make the cut

These varieties are not the main picks for Anchorage because they either run past the normal season or leave too little margin before frost.

fortex Late
Needs 1000 GDD
Anchorage gives 740 GDD
Gap 260 GDD short
740 GDD available before frost 260 more GDD needed
May 1 September 29
Runs past season
Why not a main pick?

Local season fit: fortex usually needs about 260 more GDD than Anchorage provides before frost.

Best for: high-quality long beans.

An excellent-quality pole bean that is generally happier when warmth and season length are less limiting.

Tradeoff: Needs a supportive warm season.

rattlesnake Late
Needs 1000 GDD
Anchorage gives 740 GDD
Gap 260 GDD short
740 GDD available before frost 260 more GDD needed
May 1 September 29
Runs past season
Why not a main pick?

Local season fit: rattlesnake usually needs about 260 more GDD than Anchorage provides before frost.

Best for: vigorous pole beans.

A vigorous bean that can be productive, but is better where the season leaves a little more room.

Tradeoff: Needs a longer warm run than early bush beans.

scarlet runner Late
Needs 1000 GDD
Anchorage gives 740 GDD
Gap 260 GDD short
740 GDD available before frost 260 more GDD needed
May 1 September 29
Runs past season
Why not a main pick?

Local season fit: scarlet runner usually needs about 260 more GDD than Anchorage provides before frost.

Best for: showy edible vines.

A showy and productive runner bean that can be more exposed in shorter or cooler seasons.

Tradeoff: More exposed in short or cool seasons.

blue lake Mid-season
Needs 900 GDD
Anchorage gives 740 GDD
Gap 160 GDD short
740 GDD available before frost 160 more GDD needed
May 1 September 29
Runs past season
Why not a main pick?

Local season fit: blue lake usually needs about 160 more GDD than Anchorage provides before frost.

Best for: classic green beans.

A classic bean with strong garden appeal when the warm season comfortably supports it.

Tradeoff: Needs a comfortable warm window.

kentucky wonder Mid-season
Needs 900 GDD
Anchorage gives 740 GDD
Gap 160 GDD short
740 GDD available before frost 160 more GDD needed
May 1 September 29
Runs past season
Why not a main pick?

Local season fit: kentucky wonder usually needs about 160 more GDD than Anchorage provides before frost.

Best for: productive pole beans.

A productive, familiar bean that benefits from a decent stretch of warm weather.

Tradeoff: Needs more time and support than bush beans.

roma ii Mid-season
Needs 900 GDD
Anchorage gives 740 GDD
Gap 160 GDD short
740 GDD available before frost 160 more GDD needed
May 1 September 29
Runs past season
Why not a main pick?

Local season fit: roma ii usually needs about 160 more GDD than Anchorage provides before frost.

Best for: flat Italian beans.

A reliable Italian-type bean that usually works well when planting is timely and soil is warm.

Tradeoff: Chosen for pod type more than maximum speed.

contender Early
Needs 800 GDD
Anchorage gives 740 GDD
Gap 60 GDD short
740 GDD available before frost 60 more GDD needed
May 1 September 29
Runs past season
Why not a main pick?

Local season fit: contender usually needs about 60 more GDD than Anchorage provides before frost.

Best for: steady early beans.

An early bean valued for reliability and practical performance in variable garden conditions.

Tradeoff: Less about novelty and more about reliability.

Variety class Typical days to maturity Typical GDD need Local fit
Very early 45–52 725 Tight
Early 50–55 800 Tight
Mid-season 55–65 900 Poor fit
Late 65–75 1000 Poor fit

Main risk: This is close enough that any delay in planting, or any extra days to maturity, can be the difference between finishing and falling short before frost.

How Frost Affects Planting Dates for Beans in Anchorage

Anchorage usually has about 151 frost-free days, with a typical last spring frost around May 1 and a typical first fall frost around September 29.

Typical last spring frost May 1
Typical first fall frost September 29
Typical frost-free days 151
Minimum safe temperature 32°F / 0 °C

Beans are generally frost-tender and temperatures below about 32°F ( 0 °C) can slow growth or damage plants.

Beans are much more exposed to frost risk, so the frost dates matter as real planting boundaries rather than rough planning markers.

The most common problem is running short on season. Late planting, slower varieties, and cooler exposed sites can turn a possible crop into a disappointing one.

In Anchorage, beans usually have enough season to work well, but site warmth still affects how comfortably they finish before the usual fall frost around September 29. Local gardens do not all warm and cool at the same pace. The warmest garden spots are usually south-facing walls, sheltered gardens, raised beds, and sunnier urban lots. Cooler spots like low spots, exposed sites, and shadier yards tend to warm up later and usually provide less heat. For beans, the main gain is faster early growth and a bit more time for pod production before the season fades.

Grow better beans with warm soil and early protection

The most useful supplies are the ones that warm the soil, protect young plants, and prevent a slow start.

Soil warming

When the crop is tight, warm soil matters before the seed even germinates.

Early protection

A little protection can help young plants avoid cold setbacks.

Moisture and establishment

Fast early growth needs steady moisture after sowing.

Recommendations are based on the local growing margin for this crop. As an Amazon Associate, we may earn from qualifying purchases.

Related Crops and Guides

Related crops

  • Sweet Corn in Anchorage
    Compare local planting timing, frost margin, and season fit for another crop in the same city.
  • Peppers in Anchorage
    Compare local planting timing, frost margin, and season fit for another crop in the same city.

Related guides

For a broader local overview, see the Anchorage planting guide. You can also use the Growing Degree Day Planner to test planting dates and crop timing.