Leek · Lévis, Quebec, Canada
When to plant leeks in Lévis
Main outdoor window
14 May - 4 Jun
A climate estimate. Check your soil, forecast and cultivar.
Timed from last spring frost
14 May
In Lévis, on your chosen risk.
Ready to pick
22 Aug - 11 Sep
If you plant at the start of the window.
The average last frost. Half of all years are later than this.
Step by step in Lévis
Download these planting dates (.ics)
Import into Apple Calendar, Google Calendar or Outlook. Dates use the selected risk level and are planning estimates, not frost alerts.
Each window is a planning range. Check the forecast, soil and cultivar before planting; a later date is not automatically safer in hot or wet conditions.
Start indoors
19 Mar - 9 Apr
Eight weeks before your last frost, under cover or on a windowsill.
Plant out
14 May - 4 Jun
Around your last frost.
Harvest
22 Aug - 11 Sep
Leeks through the year
Against the frost risk in Lévis
Seasonal context
Rainfall and the growing season in Lévis
July has the highest average precipitation (124 mm); February has the lowest (64 mm). Compare this pattern with the planting windows and your water supply.
During wetter months, check that beds and containers drain after heavy rain. During drier months, plan how you will keep seeds and new transplants watered. Monthly averages can hide long dry spells and intense storms; they do not show soil moisture, humidity or this week's weather.
Source: NASA POWER, corrected MERRA-2 precipitation, 2001–2020. Values are approximate monthly totals, including the water equivalent of snow, from the nearest 0.5° × 0.625° grid cell. This reference period differs from the temperature record. Rainfall provides context and does not change the calculated planting dates. Method and limitations.
Monthly growing conditions in Lévis
Compare the planting window with the local temperature pattern. These are historical monthly averages, not this year's forecast or measured soil temperatures. Average frost days do not tell you whether a particular night will freeze.
| Month | Average low | Average high | Frost days |
|---|---|---|---|
| January | -18.9°C (-2.1°F)-2.1°F (-18.9°C) | -9.2°C (15.5°F)15.5°F (-9.2°C) | 30.8 |
| February | -18°C (-0.4°F)-0.4°F (-18°C) | -7.5°C (18.5°F)18.5°F (-7.5°C) | 28.2 |
| March | -11.8°C (10.8°F)10.8°F (-11.8°C) | -2.6°C (27.3°F)27.3°F (-2.6°C) | 30.4 |
| April | -3.2°C (26.2°F)26.2°F (-3.2°C) | 5.8°C (42.5°F)42.5°F (5.8°C) | 23.3 |
| May | 4.3°C (39.7°F)39.7°F (4.3°C) | 14.9°C (58.9°F)58.9°F (14.9°C) | 4.8 |
| June | 10.2°C (50.4°F)50.4°F (10.2°C) | 19.9°C (67.8°F)67.8°F (19.9°C) | 0.0 |
| July | 13.5°C (56.2°F)56.2°F (13.5°C) | 22.2°C (71.9°F)71.9°F (22.2°C) | 0.0 |
| August | 12.6°C (54.7°F)54.7°F (12.6°C) | 21.5°C (70.6°F)70.6°F (21.5°C) | 0.0 |
| September | 8.4°C (47°F)47°F (8.4°C) | 17.7°C (63.9°F)63.9°F (17.7°C) | 0.3 |
| October | 2.3°C (36.1°F)36.1°F (2.3°C) | 10.2°C (50.4°F)50.4°F (10.2°C) | 10.0 |
| November | -5°C (23.1°F)23.1°F (-5°C) | 1.8°C (35.3°F)35.3°F (1.8°C) | 25.8 |
| December | -13.6°C (7.4°F)7.4°F (-13.6°C) | -5.4°C (22.3°F)22.3°F (-5.4°C) | 30.5 |
For leeks, also check drainage, sunlight and cultivar requirements. See the rainfall context above; humidity, irrigation and local pest pressure are not calculated.
Local growing check
Before choosing leeks for Lévis
- July is the wettest month in the rainfall grid, averaging about 124 mm. Check how your own bed drains and plan watering around actual soil moisture; monthly rain totals are not an irrigation schedule.
The temperature and rainfall tables on this page show the underlying climate estimates. How these suitability checks work · Record what happens in your garden.
Before you plant leeks
Use the calendar to plan ahead, then check the conditions in your own garden.
- Measure the soil at sowing depth. Aim for at least 7°C (44.6°F); the calendar estimates soil warmth from air temperatures and cannot measure your bed.
- Frost tolerance does not make saturated or frozen soil suitable for planting. Wait until the bed can be worked without smearing or compacting it.
- Harden off plants raised indoors: gradually expose them to outdoor light, wind and temperature before their final move into the bed.
- Use the maturity range on your seed packet when choosing a variety. Cold, short days and transplant stress can make harvest later than the calendar estimate.
Grow a long usable shaft without burying the leaves
Transplant sturdy seedlings into prepared ground and follow the variety's planting method. Keep loose soil out of the leaf folds; a longer white shaft is not worth a gritty, buried growing point.
Keep weeds down while plants are narrow and small. Lift usable leeks as needed with a fork rather than pulling hard on the leaves, and record pest damage before reusing the bed.
What to record this season
Which variety stayed usable through your intended harvest season? Add the cultivar, sowing date and conditions to your growing record so you can compare next season.
Further reading: RHS leeks growing guide . General crop guidance; local dates on this site are calculated separately. Source checked 19 September 2026 by Safe to Plant; this is not an expert review.
The RHS guide is written for UK growing conditions. Use its cultivation advice with local cultivar and seasonal guidance; its calendar months are not worldwide recommendations.
How the dates are calculated and their limits · Keep a growing record · Report a local discrepancy
Why these dates
Transplant sturdy seedlings into prepared ground and follow the variety's planting method. Keep loose soil out of the leaf folds; a longer white shaft is not worth a gritty, buried growing point.
Cold tolerance varies with cultivar, plant age, acclimatisation and the duration of a freeze. A plant surviving frost does not mean its leaves, heads, flowers or developing crop will remain undamaged. Check the forecast and the variety's local advice.
This calendar uses frost-relative offsets as a starting point. Leeks are timed from 8 weeks before that frost for an indoor start, with planting out 0 weeks after it, and this page simply resolves those offsets against the frost date computed for Lévis.
The median frost-free season here is 145 days, against 100 to 120 days to maturity for this crop counted from planting out. That margin is what decides whether a late sowing is worth attempting.
Nearby
Leeks in places close by
Also in Lévis
Other vegetables to time
Growing leeks in Lévis
Can I grow leeks in Lévis?
The calendar estimates a planting window, not a guarantee of success. July is the wettest month in the rainfall grid, averaging about 124 mm. Check how your own bed drains and plan watering around actual soil moisture; monthly rain totals are not an irrigation schedule.
When should I plant leeks in Lévis?
Aim for 14 May - 4 Jun in an average year. If you would rather not gamble on the weather, wait until 25 May - 15 Jun - by then frost has finished in nine years out of ten.
When might leeks be ready to harvest in Lévis?
The estimated period is 22 Aug - 11 Sep, based on 100 to 120 days from the modeled planting date. Cultivar, planting material and growing conditions can change this interval; check the plant as well as the calendar.
How much frost will leeks tolerate?
Cold tolerance varies with cultivar, plant age, acclimatisation and the duration of a freeze. A plant surviving frost does not mean its leaves, heads, flowers or developing crop will remain undamaged. Check the forecast and the variety's local advice.