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When to Plant Savoy Cabbage in Palmer, AK

Palmer, Alaska Zone 4b May

May in Palmer, Alaska — your action list

If you only do a handful of things in the garden this May, make it these. They're sequenced around your zone's frost timing.

Avg. last frost May 17
Avg. first frost September 18
Soil temp (4") 51°F
Watering High
Pest pressure Low
Daylight 17.4 hrs
  1. Move savoy cabbage into the garden

    Frost risk is low now in Palmer, Alaska. If you've been covering beds overnight, you can stop.

  2. Outdoor sowing time: savoy cabbage

    These tolerate cool soil, so you're not gambling by sowing now.

To set up a strong June, finish these tasks
  • Starting indoors: savoy cabbage
  • Fall sowing: savoy cabbage

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Savoy cabbage has crinkled, deeply veined leaves that form looser heads than regular cabbage. It has a milder, sweeter flavor and is more cold-tolerant.

Palmer, Alaska is in USDA Zone 4b. The average last spring frost is May 17 and the first fall frost is September 18, giving you a growing season of approximately 124 days.

At an elevation of 1,177 feet, Palmer receives approximately 52.5 inches of rainfall annually with predominantly silt loam soil. Summer highs average 69°F, so choose short-season varieties of Savoy Cabbage to ensure they mature before fall. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Savoy Cabbage root diseases.

Palmer, AK (Zone 4b) Short season
124 days
Last Spring Frost May 17
124 growing days
First Fall Frost September 18

Palmer Soil Profile

Soil Type

Silt Loam

Soil pH

4.9-6.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Start indoors: Mar 29 Transplant: May 10 🍅 Harvest: Jul 19 – Sep 13
Recommended (50%) ✗ May not fit
Start indoors: Apr 5 Transplant: May 17 🍅 Harvest: Jul 26 – Sep 20
Safe Start (90%) ✗ May not fit
Start indoors: Apr 27 Transplant: Jun 8 🍅 Harvest: Aug 17 – Oct 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.

Soil Compatibility in Palmer

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

Soil pH

Your soil pH (4.9–6.7) is more acidic than Savoy Cabbage prefers (6.0–7.5). Add garden lime to raise pH.

Soil Texture

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

Drainage

Drainage is adequate for Savoy Cabbage.

Organic Matter

Organic matter is excellent (6.8%) — Savoy Cabbage will thrive.

How to Plant Savoy Cabbage

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

Fall planting: Sow 12 weeks before your first frost date for a fall harvest.

Plant Water Budget

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

Monthly Watering Guide for Savoy Cabbage

Savoy Cabbage needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Savoy Cabbage Needs Rainfall You Supplement Action
Jan 2.5" 0" ❄️ Dormant
Feb 2.5" 0" ❄️ Dormant
Mar 2.2" 0" ❄️ Dormant
Apr 1.6" 0" ❄️ Dormant
May 4.3" 2.2" 2.1" 💧 Light watering
Jun 4.3" 4.3" 0" ✅ Rainfall sufficient
Jul 4.3" 7.4" 0" ✅ Rainfall sufficient
Aug 4.3" 7.7" 0" ✅ Rainfall sufficient
Sep 4.3" 8.3" 0" ✅ Rainfall sufficient
Oct 6.5" 0" ❄️ Dormant
Nov 3.9" 0" ❄️ Dormant
Dec 3.3" 0" ❄️ Dormant

Water needs are for active growing months only (May–Sep in Palmer). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Savoy 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.

Savoy Cabbage needs ~158 GDD — county provides 217 GDD Excellent fit

Savoy Cabbage Planting Timeline — Palmer, AK

Savoy Cabbage Planting Calendar

Activity When Date Range
Start Indoors April 5 Apr 5 – Apr 19
Transplant Outdoors May 17 May 17 – May 31
Direct Sow May 10 May 10 – May 31
Harvest July 26 Jul 26 – Sep 20
Fall Sowing June 26 Jun 26 – Jul 10

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Natural rainfall sufficient

📅 Days to Maturity

70–110 days

🧪 Soil pH

Needs 6–7.5 · Your soil: too_acidic

🗺️ USDA Zone

Zone 4b

📆 Growing Season

124 days in Palmer

Growing Tips for Savoy Cabbage in Palmer

Direct sow Savoy Cabbage outdoors after May 17 in Palmer when soil has warmed and frost danger has passed.

Common pests for Savoy 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. Savoy cabbage is more forgiving of temperature fluctuations than smooth-leaved types. Excellent for stuffed cabbage rolls.

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 Savoy Cabbage in Palmer, AK?

Palmer is in Zone 4b with an average last frost of May 17. Plan your Savoy Cabbage planting based on this frost date — see the calendar above for exact timing.

What planting zone is Palmer, AK?

Palmer, Alaska is in USDA Hardiness Zone 4b. The average last spring frost is May 17 and first fall frost is September 18.

🌱

Your Palmer Garden Planner — Free

A 24-page printable planner built for Palmer (Zone 4b). 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 Palmer, AK. Local conditions may vary. Last updated: May 2026.

Sources & credits

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