Blog

When to Plant Cabbage in Thompson-Nicola, BC

Cabbage

Cabbage is a versatile cool-season crop that forms dense, leafy heads in green, red, or savoy varieties. It is a staple for coleslaw, sauerkraut, and many global cuisines.

Thompson-Nicola, British Columbia is in USDA Zone 7a. The average last spring frost is April 16 and the first fall frost is November 2, giving you a growing season of approximately 200 days.

At an elevation of 1,131 feet, Thompson-Nicola receives approximately 63.4 inches of rainfall annually with predominantly podzolic loam soil. Summer highs average 89°F, providing good warmth for Cabbage during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Cabbage root diseases.

Thompson-Nicola, BC (Zone 7a) Long season
200 days
Last Spring Frost April 16
200 growing days
First Fall Frost November 2

Thompson-Nicola Soil Profile

Soil Type

Podzolic Loam

Soil pH

6.0-7.0

Drainage

Well Drained

Cabbage Planting Risk Windows

Early Start (70% safe) ✓ Fits season (64 days to spare)
Start indoors: Mar 11 Transplant: Apr 15 🍅 Harvest: Jun 17 – Aug 12
Recommended (50%) ✓ Fits season (64 days to spare)
Start indoors: Mar 11 Transplant: Apr 15 🍅 Harvest: Jun 17 – Aug 12
Safe Start (90%) ✓ Fits season (64 days to spare)
Start indoors: Mar 11 Transplant: Apr 15 🍅 Harvest: Jun 17 – Aug 12

Percentages indicate frost risk at transplant. The 70% safe window means there is a 30% chance of frost after transplant — suitable for cold-hardy crops or gardeners with frost protection. The 90% safe window is best for tender plants.

How to Plant Cabbage

1"
Planting Depth
15"
Between Plants
24"
Between Rows

Fall planting: Sow 10 weeks before your first frost date for a fall harvest.

How Much Cabbage to Grow

2-4 lbs
Average yield per plant
3
Plants per person
7.5 sq ft
Space per person

For a family of 4, plant approximately 12 cabbage plants in about 30 sq ft. In Thompson-Nicola's 200-day season, you'll have plenty of time for a full harvest. Plan your garden layout →

Cabbage Water Budget

Plant needs
0.9″/week
Rainfall provides
1.3″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

Monthly Watering Guide for Cabbage

Cabbage needs approximately 0.9 inches of water per week (3.9" per month). Here's how your county's rainfall compares month by month.

Month Cabbage Needs Rainfall You Supplement Action
Jan 3" 0" ❄️ Dormant
Feb 2.4" 0" ❄️ Dormant
Mar 4.3" 0" ❄️ Dormant
Apr 3.9" 6.7" 0" ✅ Rainfall sufficient
May 3.9" 8" 0" ✅ Rainfall sufficient
Jun 3.9" 8.2" 0" ✅ Rainfall sufficient
Jul 3.9" 5.9" 0" ✅ Rainfall sufficient
Aug 3.9" 6.3" 0" ✅ Rainfall sufficient
Sep 3.9" 5.8" 0" ✅ Rainfall sufficient
Oct 3.9" 4.7" 0" ✅ Rainfall sufficient
Nov 3.9" 4.5" 0" ✅ Rainfall sufficient
Dec 3.5" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Nov in Thompson-Nicola). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Cabbage Heat Requirements (GDD)

What are Growing Degree Days (GDD)?

Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" — every day above 50°F deposits warmth that helps your plants grow.

Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.

Cabbage needs ~1,340 GDD — county provides 3,333 GDD Excellent fit

Cabbage Planting Timeline — Thompson-Nicola, BC

Cabbage Planting Calendar

Activity When Date Range
Start Indoors March 12 Mar 12 – Mar 26
Transplant Outdoors April 16 Apr 16 – Apr 30
Direct Sow April 2 Apr 2 – Apr 23
Harvest June 18 Jun 18 – Aug 13
Fall Sowing August 24 Aug 24 – Sep 7

Plant 1" deep · 15" apart · Rows 24" apart

Month-by-Month Timeline

MonthActivities
January
February
March Start Indoors
April Transplant Outdoors Direct Sow
May
June Harvest
July Harvest
August Fall Sowing Harvest
September Fall Sowing
October
November
December

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.9"/week · Natural rainfall sufficient

📅 Days to Maturity

60–100 days

🧪 Soil pH

Needs 6–7.5 · Your soil: N/A

🗺️ USDA Zone

Zone 7a

📆 Growing Season

200 days in Thompson-Nicola

Growing Tips for Cabbage in Thompson-Nicola

Common pests for Cabbage in this region include cabbage worm and flea beetles. Use row covers early in the season and inspect plants weekly.

General growing tips

Start seeds indoors 4-6 weeks before last frost. Space plants 18-24 inches apart. Keep soil evenly moist to prevent heads from splitting.

Companion Planting

Good Companions

Avoid Planting Near

  • Strawberries
  • Tomatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Cabbage in Thompson-Nicola, BC?

Thompson-Nicola is in Zone 7a with an average last frost of April 16. Plan your Cabbage planting based on this frost date — see the calendar above for exact timing.

What planting zone is Thompson-Nicola, BC?

Thompson-Nicola, British Columbia is in USDA Hardiness Zone 7a. The average last spring frost is April 16 and first fall frost is November 2.

🌱

Your Thompson-Nicola Garden Planner — Free

A 22-page printable planner built for Thompson-Nicola (Zone 7a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

Instant PDF download. No spam, unsubscribe any time.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Thompson-Nicola, BC. Local conditions may vary. Last updated: June 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.