When to Plant Kale in Southeast Fairbanks, AK
May to-do list for Southeast Fairbanks, Alaska
Each item below is timed to Southeast Fairbanks, Alaska's frost dates and soil temperatures. Skip nothing, stress about nothing.
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Put kale seeds straight in the ground
Keep the top inch of soil moist until germination — a gentle morning watering for 5–7 days does the job.
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Direct-sow kale for cool weather
Your first frost is about 2 weeks away — plenty of time for these to mature.
Coming up in June — start thinking about
- Transplants going out: kale
Kale is an exceptionally hardy, nutrient-dense green available in curly, lacinato, and Russian varieties. It tolerates heavy frost and often tastes sweeter after cold exposure.
Southeast Fairbanks, Alaska is in USDA Zone 2a. The average last spring frost is June 6 and the first fall frost is August 17, giving you a growing season of approximately 72 days.
At an elevation of 1,414 feet, Southeast Fairbanks receives approximately 39.8 inches of rainfall annually with predominantly silt loam soil. Summer highs average 62°F, so choose short-season varieties of Kale to ensure they mature before fall.
Southeast Fairbanks Soil Profile
Soil Type
Silt Loam
Soil pH
4.9-6.6
Drainage
Well Drained
Plant Planting Risk Windows
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 Southeast Fairbanks
How your county's soil matches Kale's growing requirements.
Soil pH
Your soil pH (4.9–6.6) is more acidic than Kale prefers (6.0–7.5). Add garden lime to raise pH.
Soil Texture
The silt loam soil in Southeast Fairbanks is excellent for Kale — good drainage, moisture retention, and nutrient holding capacity.
Drainage
Drainage is adequate for Kale.
Organic Matter
Organic matter is excellent (6.3%) — Kale will thrive.
How to Plant Kale
Fall planting: Sow 12 weeks before your first frost date for a fall harvest.
Plant Water Budget
Monthly Watering Guide for Kale
Kale needs approximately 0.8 inches of water per week (3.5" per month). Here's how your county's rainfall compares month by month.
| Month | Kale Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 2" | 0" | ❄️ Dormant |
| Feb | — | 1.6" | 0" | ❄️ Dormant |
| Mar | — | 1.6" | 0" | ❄️ Dormant |
| Apr | — | 1.4" | 0" | ❄️ Dormant |
| May | — | 1.8" | 0" | ❄️ Dormant |
| Jun | 3.5" | 3.5" | 0" | ✅ Rainfall sufficient |
| Jul | 3.5" | 5.1" | 0" | ✅ Rainfall sufficient |
| Aug | 3.5" | 5.9" | 0" | ✅ Rainfall sufficient |
| Sep | — | 6.6" | 0" | ❄️ Dormant |
| Oct | — | 4.5" | 0" | ❄️ Dormant |
| Nov | — | 3.3" | 0" | ❄️ Dormant |
| Dec | — | 2.5" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Jun–Aug in Southeast Fairbanks). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Kale 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.
Kale Planting Timeline — Southeast Fairbanks, AK
Kale Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | April 25 | Apr 25 – May 9 |
| Transplant Outdoors | June 6 | Jun 6 – Jun 20 |
| Direct Sow | May 30 | May 30 – Jun 20 |
| Harvest | August 1 | Aug 1 – Sep 26 |
| Fall Sowing | May 25 | May 25 – Jun 8 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Start Indoors |
| May | Start Indoors Direct Sow Fall Sowing |
| June | Transplant Outdoors Direct Sow Fall Sowing |
| July | — |
| August | Harvest |
| September | Harvest |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
0.8"/week · Natural rainfall sufficient
📅 Days to Maturity
50–70 days
🧪 Soil pH
Needs 6–7.5 · Your soil: too_acidic
🗺️ USDA Zone
Zone 2a
📆 Growing Season
72 days in Southeast Fairbanks
Growing Tips for Kale in Southeast Fairbanks
Direct sow Kale outdoors after June 06 in Southeast Fairbanks when soil has warmed and frost danger has passed.
Common pests for Kale in this region include cabbage worm and flea beetles. Use row covers early in the season and inspect plants weekly.
General growing tips
Direct sow or transplant in early spring or late summer. Harvest outer leaves first to keep plants productive. Kale overwinters in many climates and can provide greens all year.
Recommended Kale Varieties for Southeast Fairbanks
Cold-hardy kale that improves in flavor after frost
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Isolate 1/2 mile from other brassicas (broccoli, cabbage, etc.) — they all cross.
Kale in Other Locations
Frequently Asked Questions
When should I plant Kale in Southeast Fairbanks, AK?
Southeast Fairbanks is in Zone 2a with an average last frost of June 6. Plan your Kale planting based on this frost date — see the calendar above for exact timing.
What planting zone is Southeast Fairbanks, AK?
Southeast Fairbanks, Alaska is in USDA Hardiness Zone 2a. The average last spring frost is June 6 and first fall frost is August 17.
Your Southeast Fairbanks Garden Planner — Free
A 24-page printable planner built for Southeast Fairbanks (Zone 2a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.