Practical planning tools for short growing seasons.

Climate-based bean planting guide for Whitehorse, Yukon

When to Plant Beans in Whitehorse

Beans are a more demanding choice in Whitehorse, usually favoring only the quickest and most climate-appropriate approaches.

Typical Planting Window

Risky in this climate

Use the planting dates below for beans in Whitehorse.

Typical planting window June 3 – June 17
Method Direct sow
Typical days to maturity 50–65

Beans are usually sown directly outdoors around June 10, with a typical local planting window of June 3 to June 17. Most varieties need about 50–65 days to reach maturity.

Beans are challenging in Whitehorse. Gardeners who succeed usually stack the odds with the fastest varieties, the best timing, and the warmest sites they have.

This crop sits close to the local seasonal edge, so smaller setbacks matter more here than they would in easier climates.

Best local strategy: Use the warmest sites available and avoid giving up any season to delays or slower variety choice.

Can Beans Mature in Whitehorse?

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) 467
Typical crop GDD target 900
Heat margin -433

From the usual planting window, Whitehorse typically provides about 467 growing degree days for beans. With a typical crop target of 900, that leaves a heat margin of -433. That heat shortfall means the crop usually needs the fastest approach and the warmest local conditions to have a realistic chance of finishing well.

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 15 495 -405 Usually short
Jun 1 494 -406 Usually short
Jun 15 446 -454 Usually short
Jul 1 359 -541 Usually short

How Different Bean Varieties Affect Results

In Whitehorse, only the fastest bean varieties are realistic candidates in a typical year. Larger and later types usually run out of season before finishing well.

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 Whitehorse

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

June 3 local season starts August 28 frost pressure returns
Less heat used 467 GDD available

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

For Whitehorse, Mascotte and Provider are the most realistic bean options for this short-season fit. They need good timing, steady early growth, and realistic expectations.

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

Closest matches for a marginal season

Mascotte Very early
725 GDD needed 467 available before frost
June 3 August 28
Usually too long
Why this fit?

Local season fit: Mascotte is about 258 GDD short against the normal Whitehorse 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.

Provider Very early
725 GDD needed 467 available before frost
June 3 August 28
Usually too long
Why this fit?

Local season fit: Provider is about 258 GDD short against the normal Whitehorse 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.

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 Whitehorse because they either run past the normal season or leave too little margin before frost.

fortex Late
Needs 1000 GDD
Whitehorse gives 467 GDD
Gap 533 GDD short
467 GDD available before frost 533 more GDD needed
June 3 August 28
Runs past season
Why not a main pick?

Local season fit: fortex usually needs about 533 more GDD than Whitehorse 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
Whitehorse gives 467 GDD
Gap 533 GDD short
467 GDD available before frost 533 more GDD needed
June 3 August 28
Runs past season
Why not a main pick?

Local season fit: rattlesnake usually needs about 533 more GDD than Whitehorse 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
Whitehorse gives 467 GDD
Gap 533 GDD short
467 GDD available before frost 533 more GDD needed
June 3 August 28
Runs past season
Why not a main pick?

Local season fit: scarlet runner usually needs about 533 more GDD than Whitehorse 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
Whitehorse gives 467 GDD
Gap 433 GDD short
467 GDD available before frost 433 more GDD needed
June 3 August 28
Runs past season
Why not a main pick?

Local season fit: blue lake usually needs about 433 more GDD than Whitehorse 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
Whitehorse gives 467 GDD
Gap 433 GDD short
467 GDD available before frost 433 more GDD needed
June 3 August 28
Runs past season
Why not a main pick?

Local season fit: kentucky wonder usually needs about 433 more GDD than Whitehorse 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
Whitehorse gives 467 GDD
Gap 433 GDD short
467 GDD available before frost 433 more GDD needed
June 3 August 28
Runs past season
Why not a main pick?

Local season fit: roma ii usually needs about 433 more GDD than Whitehorse 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
Whitehorse gives 467 GDD
Gap 333 GDD short
467 GDD available before frost 333 more GDD needed
June 3 August 28
Runs past season
Why not a main pick?

Local season fit: contender usually needs about 333 more GDD than Whitehorse 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 Poor fit
Early 50–55 800 Poor fit
Mid-season 55–65 900 Poor fit
Late 65–75 1000 Poor fit

Main risk: The main issue here is usually simple season length: the crop often runs out of time before finishing properly.

How Frost Affects Planting Dates for Beans in Whitehorse

Whitehorse usually has about 86 frost-free days, with a typical last spring frost around June 3 and a typical first fall frost around August 28.

Typical last spring frost June 3
Typical first fall frost August 28
Typical frost-free days 86
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 crop usually falls short here because the season runs out before it finishes well. Late planting, cool nights, and slower varieties make that problem much worse.

In Whitehorse, the local season often leaves beans close to practical limits, so warmer sites are usually part of the plan rather than just an advantage. Local gardens do not all warm and cool at the same pace. In practical terms, the best spots are usually south-facing walls, sheltered gardens, raised beds, and sunnier urban lots. Cooler spots like low spots, exposed sites, and shadier yards are more likely to stay cooler and be less forgiving. For beans, warmer sites usually help most by speeding early growth and extending productive pod set a little longer into the season.

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

Related guides

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