Practical planning tools for short growing seasons.

Climate-based bean planting guide for Baie-Comeau, Quebec

When to Plant Beans in Baie-Comeau

Beans are more marginal in Baie-Comeau 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 Baie-Comeau.

Typical planting window May 29 – June 12
Method Direct sow
Typical days to maturity 50–65

Beans are usually sown directly outdoors around June 5, with a typical local planting window of May 29 to June 12. Most varieties need about 50–65 days to reach maturity.

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

Compared with many Quebec locations, Baie-Comeau usually reaches the planting season for beans a bit later.

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

Can Beans Mature in Baie-Comeau?

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) 754
Typical crop GDD target 900
Heat margin -146

From the usual planting window, Baie-Comeau typically provides about 754 growing degree days for beans. With a typical crop target of 900, that leaves a heat margin of -146. 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 15 758 -142 Usually short
Jun 1 757 -143 Usually short
Jun 15 717 -183 Usually short
Jul 1 610 -290 Usually short

How Different Bean Varieties Affect Results

In Baie-Comeau, 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 Baie-Comeau

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

May 29 local season starts September 21 frost pressure returns
Less heat used 754 GDD available

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

For Baie-Comeau, 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 754 available before frost
May 29 September 21
Tight fit
Why this fit?

Local season fit: Provider leaves about 29 GDD cushion against the normal Baie-Comeau 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 754 available before frost
May 29 September 21
Tight fit
Why this fit?

Local season fit: Mascotte leaves about 29 GDD cushion against the normal Baie-Comeau 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 Baie-Comeau because they either run past the normal season or leave too little margin before frost.

fortex Late
Needs 1000 GDD
Baie-Comeau gives 754 GDD
Gap 246 GDD short
754 GDD available before frost 246 more GDD needed
May 29 September 21
Runs past season
Why not a main pick?

Local season fit: fortex usually needs about 246 more GDD than Baie-Comeau 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
Baie-Comeau gives 754 GDD
Gap 246 GDD short
754 GDD available before frost 246 more GDD needed
May 29 September 21
Runs past season
Why not a main pick?

Local season fit: rattlesnake usually needs about 246 more GDD than Baie-Comeau 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
Baie-Comeau gives 754 GDD
Gap 246 GDD short
754 GDD available before frost 246 more GDD needed
May 29 September 21
Runs past season
Why not a main pick?

Local season fit: scarlet runner usually needs about 246 more GDD than Baie-Comeau 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
Baie-Comeau gives 754 GDD
Gap 146 GDD short
754 GDD available before frost 146 more GDD needed
May 29 September 21
Runs past season
Why not a main pick?

Local season fit: blue lake usually needs about 146 more GDD than Baie-Comeau 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
Baie-Comeau gives 754 GDD
Gap 146 GDD short
754 GDD available before frost 146 more GDD needed
May 29 September 21
Runs past season
Why not a main pick?

Local season fit: kentucky wonder usually needs about 146 more GDD than Baie-Comeau 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
Baie-Comeau gives 754 GDD
Gap 146 GDD short
754 GDD available before frost 146 more GDD needed
May 29 September 21
Runs past season
Why not a main pick?

Local season fit: roma ii usually needs about 146 more GDD than Baie-Comeau 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
Baie-Comeau gives 754 GDD
Gap 46 GDD short
754 GDD available before frost 46 more GDD needed
May 29 September 21
Runs past season
Why not a main pick?

Local season fit: contender usually needs about 46 more GDD than Baie-Comeau 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 Baie-Comeau

Baie-Comeau usually has about 115 frost-free days, with a typical last spring frost around May 29 and a typical first fall frost around September 21.

Typical last spring frost May 29
Typical first fall frost September 21
Typical frost-free days 115
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 Baie-Comeau, the seasonal margin for beans is tighter before the usual fall frost around September 21, which makes local site warmth more important than it is for easier crops. 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.

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Related guides

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