British Columbia Garden Guide: Planting Dates, Frost Dates & Growing Season
British Columbia’s coastal zones enjoy longer seasons than interior mountain regions.
In a typical year, the growing season in British Columbia runs roughly from April 4 through November 4, leaving about 214 frost-free days in many parts of the province. Use this page as a provincial baseline, then compare city pages for more local planting timing.
Growing Season Snapshot
British Columbia is one of the least uniform gardening regions on the site. Coastal moderation, rain-shadow valleys, mountain towns, and northern interior locations all behave differently, so province-level averages are only a starting point. The useful question here is always what kind of BC climate a place actually belongs to.
These season boundaries are climate normals, not a forecast. A 50% frost date means a 32°F frost arrives by that date in about half of years — and later in about half. Treat these dates as planning anchors, not guarantees.
British Columbia Planting Calendar
A practical guide to when planting usually works in British Columbia. These windows are based on climate normals (not a forecast) and line up with the 50% last spring frost and typical early-season heat.
| Crop | Planting Window | Method |
|---|---|---|
| Cool-season / early window Cold-tolerant crops that usually handle cooler spring conditions better. | ||
| Peas | March 7 – March 21 | direct sow |
| Spinach | March 7 – March 21 | direct sow |
| Lettuce | March 14 – March 28 | direct sow / transplant |
| Strawberries | March 14 – March 28 | plant crowns / transplants |
| Carrots | March 14 – March 28 | direct sow |
| Beets | March 14 – March 28 | direct sow |
| Radishes | March 7 – March 21 | direct sow |
| Potatoes | March 21 – April 4 | plant seed potatoes |
| Onions | March 14 – March 28 | sets / transplants |
| Garlic | March 16 – March 26 | plant cloves |
| Broccoli | March 21 – April 4 | transplant |
| Cauliflower | March 21 – April 4 | transplant |
| Cabbage | March 21 – April 4 | transplant |
| Kale | March 11 – March 31 | direct sow / transplant |
| Swiss chard | March 15 – April 4 | direct sow / transplant |
| Main warm-season window Crops that usually do best once frost risk fades and the season starts opening up more fully. | ||
| Beans | April 4 – April 18 | direct sow |
| Sweet corn | April 9 – April 19 | direct sow |
| Cucumbers | April 13 – April 23 | direct sow / transplant |
| Zucchini | April 13 – April 23 | direct sow / transplant |
| Squash | April 13 – April 23 | direct sow / transplant |
| Melons | April 13 – April 23 | direct sow / transplant |
| Watermelons | April 13 – April 23 | direct sow / transplant |
| Basil | April 13 – April 23 | direct sow / transplant |
| Tomatoes | April 13 – April 23 | transplant |
| Peppers | April 20 – April 30 | transplant |
How to use this: aim for the earlier part of each window for the most reliable results. Later planting can still work, but it usually depends more on variety maturity, warmer microclimates, and simple protection like row cover or low tunnels.
Common Timing Mistakes
These patterns show up again and again in British Columbia — especially in typical years.
- Planting everything at once instead of staggering crops across the season.
- Assuming conditions are uniform across the region — frost timing often varies widely by elevation, exposure, and shelter.
- Relying on calendar dates instead of crop maturity and typical frost timing.
Frost Dates and Growing Conditions Across British Columbia Cities
Growing conditions often vary more within British Columbia than most gardeners expect. Differences in elevation, exposure, cold-air drainage, and nearby pavement or buildings can shift frost timing and change how much usable season you really have.
| City | Last spring frost | First fall frost | Frost-free days | Remaining GDD (May 15 → Aug 1, base 50) |
|---|---|---|---|---|
| Vancouver | Mar 19 | Nov 10 | 236 | 1814 → 826 |
| Victoria | Apr 04 | Nov 04 | 214 | 1339 → 665 |
| Kelowna | Apr 30 | Oct 08 | 161 | 1696 → 680 |
| Kamloops | Apr 25 | Oct 12 | 170 | 1989 → 795 |
| Prince George | May 22 | Sep 07 | 108 | 696 → 228 |
| Abbotsford | Apr 03 | Nov 07 | 218 | 1381 → 635 |
| Chilliwack | Apr 03 | Nov 07 | 218 | 1445 → 625 |
| Courtenay | Apr 01 | Nov 06 | 219 | 1290 → 573 |
| Cranbrook | May 18 | Sep 23 | 128 | 1232 → 477 |
| Fort St. John | May 12 | Sep 16 | 127 | 866 → 287 |
| Nanaimo | Mar 19 | Nov 10 | 236 | 1853 → 860 |
| Nelson | Apr 28 | Oct 13 | 168 | 1859 → 804 |
| Penticton | Apr 30 | Oct 08 | 161 | 2027 → 837 |
| Powell River | Apr 01 | Nov 06 | 219 | 1244 → 539 |
| Quesnel | May 22 | Sep 19 | 120 | 1089 → 395 |
| Revelstoke | May 31 | Sep 11 | 103 | 1759 → 691 |
| Salmon Arm | Apr 28 | Oct 06 | 161 | 1831 → 712 |
| Terrace | Apr 25 | Oct 17 | 175 | 992 → 418 |
| Vernon | Apr 28 | Oct 06 | 161 | 1854 → 754 |
| Williams Lake | May 21 | Sep 14 | 116 | 798 → 305 |
| Whistler | Apr 19 | Oct 28 | 192 | 1008 → 460 |
| Port Alberni | Apr 01 | Nov 06 | 219 | 1442 → 709 |
| Surrey | Apr 11 | Oct 30 | 202 | 1720 → 781 |
| Burnaby | Mar 19 | Nov 10 | 236 | 1814 → 826 |
| Campbell River | Apr 27 | Oct 13 | 169 | 1360 → 588 |
| Smithers | May 26 | Sep 17 | 114 | 899 → 349 |
| Fort Nelson | May 15 | Sep 14 | 122 | 963 → 271 |
| Mackenzie | May 26 | Sep 17 | 114 | 775 → 252 |
| 100 Mile House | Apr 25 | Oct 12 | 170 | 819 → 327 |
- Frost timing varies widely across the region, especially between colder pockets and more sheltered sites.
- Earlier-frost and shorter-season locations usually need faster-maturing crops and tighter planting timing.
- Warmer locations usually retain more remaining heat through the season, giving longer-season crops and later plantings better odds of finishing.
- Urban areas, walls, and sheltered gardens usually stay warmer than open rural or wind-exposed sites.
- Cold air settles in low spots, so slightly elevated beds often avoid the earliest frosts.
- South- and west-facing areas usually warm sooner in spring and can stay productive later into fall.
How the Growing Season Works in British Columbia
British Columbia usually has a relatively forgiving season, but results still depend on how quickly gardens warm in spring and how well crop choices match local conditions.
- Stagger planting dates: spreading sowings and transplanting windows often works better than planting everything at once.
- Fall planting is more realistic: many areas still have enough runway for a meaningful second round of faster crops.
- Summer management becomes the limiter: water, fertility, and pest pressure often matter more than season length alone.
Microclimate note: frost timing varies widely across British Columbia, so sheltered gardens, urban sites, and warmer exposures can behave very differently from colder open areas.
Remaining Season Heat in British Columbia (Base 50 GDD)
Growing Degree Days (Base 50°F) measure heat accumulation. “Remaining GDD” shows how much usable heat is typically still available from a given date onward in a normal season.
| Planting date | Base | Typical GDD still available |
|---|---|---|
| May 15 | 50 | 1079 |
| June 1 | 50 | 1014 |
| July 1 | 50 | 767 |
| August 1 | 50 | 442 |
Use these values to judge whether a crop or variety still has enough heat left after planting. This is especially helpful for later sowings, shorter-maturity choices, and deciding whether a second round is realistic.
How Gardeners Adapt
Experienced gardeners in British Columbia usually adjust their timing and crop choices to match how the season actually behaves, not just the calendar.
- Using row cover or low tunnels to smooth out temperature swings early and late in the season.
- Succession planting fast crops to keep beds productive through summer.
- Watching local conditions closely and adjusting timing year by year.
British Columbia Garden Planning Chart
A practical “typical year” for planning. Use it as a baseline, then adjust for microclimates and variety maturity.
| Stage | What it usually means |
|---|---|
| Early season | Start cold-tolerant crops, prep beds, and pay more attention to soil warmth and night temperatures than to the calendar alone. |
| Main planting | Around April 4, the main planting push usually begins as frost risk fades. Warm-season crops generally perform best when they get established promptly. |
| Peak growth | This is when water, fertility, spacing, and pest pressure have the biggest effect on final yield. |
| Late-summer decisions | Second plantings can work, but success usually depends on maturity, microclimate, and how warm late summer stays. |
| Finish window | Plan to have frost-sensitive crops mostly wrapped up by November 4. Cooling nights often slow crops before the first real frost arrives. |
Typical season length: 214 frost-free days between the median spring and fall frost dates.