Climate-based bean planting guide for Timmins, Ontario

When to Plant Beans in Timmins

Beans are usually a practical fit in Timmins, though this is still a crop that rewards timely planting and sensible variety choice, especially among very early to late varieties.

Typical Planting Window

Good fit in this climate

Use the planting dates below for beans in Timmins.

Typical planting window June 7 – June 21
Method Direct sow
Typical days to maturity 50–65

Beans are usually sown directly outdoors around June 14, with a typical local planting window of June 7 to June 21. Most varieties need about 50–65 days to reach maturity.

Beans are generally practical in Timmins, especially when gardeners plant on time and stay close to very early to late varieties.

Within Ontario, Timmins usually reaches planting time for beans a little later than many comparable locations.

Best local strategy: Sow on time, use reliable varieties, and protect early momentum.

Can Beans Mature in Timmins?

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) 1018
Typical crop GDD target 900
Heat margin +118

From the usual planting window, Timmins typically provides about 1018 growing degree days for beans. With a typical crop target of 900, that leaves a heat margin of +118. That heat margin usually gives the crop enough room to finish, but not so much that delays stop mattering. Timing and variety choice still affect how comfortably the crop fits.

When Is It Too Late to Plant?

If planting later than usual, this table shows how much growing degree day heat is still available from each point in the season. It is most useful for judging how much flexibility you still have before the crop starts losing margin.

Checkpoint Remaining GDD Heat margin Fit vs typical target
Apr 15 1239 +339 Comfortable
Jun 1 1175 +275 Comfortable
Jun 15 1084 +184 Comfortable
Jul 1 896 -4 Usually short

How Different Bean Varieties Affect Results

In Timmins, very early to mid-season bean varieties are usually the best fit in a typical year. Slower choices can still work when gardeners want their specific qualities and do not give away margin through delay.

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
  • Contender — valued for earliness and steadiness, especially in variable conditions
  • Blue Lake — a classic bean with strong garden appeal when the season comfortably supports it
  • Kentucky Wonder — productive and popular, though it benefits from a decent amount of warm weather
  • Roma II — a reliable Italian-type bean that usually works well where planting is timely

Best Bean Varieties for Timmins

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

June 7 local season starts September 7 frost pressure returns
Less heat used 1018 GDD available

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

For Timmins, start with Contender for beans when you want steady early beans. Choose Mascotte and Provider when you want compact early bean harvests or early reliable bush beans. Look at Fortex, Rattlesnake, and Scarlet Runner when you specifically want high-quality long beans, vigorous pole beans, or showy edible vines.

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

Fastest / most cushion

Mascotte Very early
725 GDD needed 1018 available before frost
June 7 September 7
Good fit
Why this fit?

Local season fit: Mascotte leaves about 293 GDD cushion against the normal Timmins 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 1018 available before frost
June 7 September 7
Good fit
Why this fit?

Local season fit: Provider leaves about 293 GDD cushion against the normal Timmins 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.

Also realistic

Fortex Late
1000 GDD needed 1018 available before frost
June 7 September 7
Tight fit
Why this fit?

Local season fit: Fortex leaves about 18 GDD cushion against the normal Timmins crop heat estimate.

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
1000 GDD needed 1018 available before frost
June 7 September 7
Tight fit
Why this fit?

Local season fit: Rattlesnake leaves about 18 GDD cushion against the normal Timmins crop heat estimate.

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
1000 GDD needed 1018 available before frost
June 7 September 7
Tight fit
Why this fit?

Local season fit: Scarlet Runner leaves about 18 GDD cushion against the normal Timmins crop heat estimate.

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
900 GDD needed 1018 available before frost
June 7 September 7
Tight fit
Why this fit?

Local season fit: Blue Lake leaves about 118 GDD cushion against the normal Timmins crop heat estimate.

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
900 GDD needed 1018 available before frost
June 7 September 7
Tight fit
Why this fit?

Local season fit: Kentucky Wonder leaves about 118 GDD cushion against the normal Timmins crop heat estimate.

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
900 GDD needed 1018 available before frost
June 7 September 7
Tight fit
Why this fit?

Local season fit: Roma II leaves about 118 GDD cushion against the normal Timmins crop heat estimate.

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.

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

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

Main risk: This crop generally fits, but slower bean varieties can run into trouble if planting is delayed or early growth stays cool and slow.

How Frost Affects Planting Dates for Beans in Timmins

Timmins usually has about 92 frost-free days, with a typical last spring frost around June 7 and a typical first fall frost around September 7.

Typical last spring frost June 7
Typical first fall frost September 7
Typical frost-free days 92
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 usual trouble comes from delayed planting or from choosing slower varieties when the local season would reward simpler, faster choices.

In Timmins, the season is usually supportive for beans, though warmer sites still help with how comfortably they finish before fall frost around September 7. 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, the main benefit is often faster early growth followed by steadier pod production from warmer soil.

Grow better beans with warm soil and steady moisture

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.

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