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When to Plant Cabbage in Foster, VA

Cabbage
Mathews County, Virginia Zone 8a August

August in the garden — Mathews County, Virginia

Your garden in Mathews County, Virginia is working on a schedule, even when you're not. Here's where you should be this August.

Avg. last frost April 9
Avg. first frost November 3
Soil temp (4") 87°F
Watering Low
Pest pressure High
Daylight 13.4 hrs
  1. It's harvest week for cabbage

    Check every 1–2 days. Many of these get tough or go to seed if you wait too long.

  2. Plant your fall garden: cabbage

    A row cover ready in the garage extends your harvest by weeks once the nights turn cold.

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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.

Foster, Virginia is in USDA Zone 8a. The average last spring frost is April 9 and the first fall frost is November 3, giving you a growing season of approximately 208 days.

At an elevation of 877 feet, Mathews County receives approximately 45.9 inches of rainfall annually with predominantly silt loam soil. Summer highs average 90°F, providing good warmth for Cabbage during the growing season.

Foster, VA (Zone 8a) Long season
208 days
Last Spring Frost April 9
208 growing days
First Fall Frost November 3

Foster Soil Profile

Soil Type

Silt Loam

Soil pH

5.3-6.8

Drainage

Well Drained

Cabbage Planting Risk Windows

Early Start (70% safe) ✓ Fits season (91 days to spare)
Start indoors: Feb 25 Transplant: Apr 1 🍅 Harvest: Jun 3 – Jul 29
Recommended (50%) ✓ Fits season (89 days to spare)
Start indoors: Mar 5 Transplant: Apr 9 🍅 Harvest: Jun 11 – Aug 6
Safe Start (90%) ✓ Fits season (92 days to spare)
Start indoors: Mar 17 Transplant: Apr 21 🍅 Harvest: Jun 23 – Aug 18

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.

Soil Compatibility in Foster

How your county's soil matches Cabbage's growing requirements.

Soil pH

Your soil pH (5.3–6.8) overlaps with Cabbage's range (6.0–7.5), though not a perfect match.

Soil Texture

The silt loam soil in Mathews County is excellent for Cabbage — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (3.1%). Annual compost additions will help Cabbage.

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.

Succession Planting Cabbage

4
successive plantings in your 208-day season

Sow every 6.9 weeks. Last sowing by Jul 26 to harvest before frost.

For a dedicated fall crop, sow by Aug 25.

Cabbage Water Budget

Plant needs
0.9″/week
Rainfall provides
0.9″/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 3.3" 0" ❄️ Dormant
Feb 3.5" 0" ❄️ Dormant
Mar 4.9" 0" ❄️ Dormant
Apr 3.9" 3.2" 0.7" 💧 Light watering
May 3.9" 3.8" 0.1" 💧 Light watering
Jun 3.9" 3.7" 0.2" 💧 Light watering
Jul 3.9" 5.3" 0" ✅ Rainfall sufficient
Aug 3.9" 4.6" 0" ✅ Rainfall sufficient
Sep 3.9" 3.8" 0.1" 💧 Light watering
Oct 3.9" 3.1" 0.8" 💧 Light watering
Nov 3.9" 2.9" 1" 💧 Light watering
Dec 3.8" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Nov in Mathews County). 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 ~1,400 GDD — county provides 3,640 GDD Excellent fit

Cabbage Planting Timeline — Foster, VA

Cabbage Planting Calendar

Activity When Date Range
Start Indoors March 5 Mar 5 – Mar 19
Transplant Outdoors April 9 Apr 9 – Apr 23
Direct Sow March 26 Mar 26 – Apr 16
Harvest June 11 Jun 11 – Aug 6
Fall Sowing August 25 Aug 25 – Sep 8

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

Month-by-Month Timeline

MonthActivities
January
February
March Start Indoors Direct Sow
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: acceptable

🗺️ USDA Zone

Zone 8a

📆 Growing Season

208 days in Mathews County

Growing Tips for Cabbage in Foster

Direct sow Cabbage outdoors after April 09 in Mathews County when soil has warmed and frost danger has passed.

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 →

🌱

Your Mathews County Garden Planner — Free

A 22-page printable planner built for Mathews County (Zone 8a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

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