When to Plant Kale in Bethel Census Area, AK
May in Bethel Census Area, Alaska — your action list
We've pulled the most time-sensitive tasks for Bethel Census Area, Alaska this May and put them front and centre. Tackle them in order.
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Set out kale seedlings
Frost risk is low now in Bethel Census Area, Alaska. If you've been covering beds overnight, you can stop.
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Seed kale outdoors
Keep the top inch of soil moist until germination — a gentle morning watering for 5–7 days does the job.
Get ahead of June
- Fall sowing: 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.
Bethel Census Area, Alaska is in USDA Zone 4a. The average last spring frost is May 22 and the first fall frost is September 21, giving you a growing season of approximately 122 days.
At an elevation of 1,369 feet, Bethel Census Area receives approximately 50.7 inches of rainfall annually with predominantly silt loam soil. Summer highs average 70°F, so choose short-season varieties of Kale to ensure they mature before fall. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Kale root diseases.
Bethel Census Area Soil Profile
Soil Type
Silt Loam
Soil pH
5.2-6.3
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 Bethel Census Area
How your county's soil matches Kale's growing requirements.
Soil pH
Your soil pH (5.2–6.3) is more acidic than Kale prefers (6.0–7.5). Add garden lime to raise pH.
Soil Texture
The silt loam soil in Bethel Census Area is excellent for Kale — good drainage, moisture retention, and nutrient holding capacity.
Drainage
Drainage is adequate for Kale.
Organic Matter
Organic matter is excellent (5.8%) — Kale will thrive.
How to Plant Kale
Fall planting: Sow 12 weeks before your first frost date for a fall harvest.
Succession Planting Kale
Sow every 5.7 weeks. Last sowing by Jul 13 to harvest before frost.
For a dedicated fall crop, sow by Jun 29.
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 | — | 2.6" | 0" | ❄️ Dormant |
| Feb | — | 2" | 0" | ❄️ Dormant |
| Mar | — | 2" | 0" | ❄️ Dormant |
| Apr | — | 1.4" | 0" | ❄️ Dormant |
| May | 3.5" | 1.8" | 1.7" | 💧 Light watering |
| Jun | 3.5" | 4" | 0" | ✅ Rainfall sufficient |
| Jul | 3.5" | 6.3" | 0" | ✅ Rainfall sufficient |
| Aug | 3.5" | 7.6" | 0" | ✅ Rainfall sufficient |
| Sep | 3.5" | 9.4" | 0" | ✅ Rainfall sufficient |
| Oct | — | 6.7" | 0" | ❄️ Dormant |
| Nov | — | 4.1" | 0" | ❄️ Dormant |
| Dec | — | 2.8" | 0" | ❄️ Dormant |
Water needs are for active growing months only (May–Sep in Bethel Census Area). 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 — Bethel Census Area, AK
Kale Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | April 10 | Apr 10 – Apr 24 |
| Transplant Outdoors | May 22 | May 22 – Jun 5 |
| Direct Sow | May 15 | May 15 – Jun 5 |
| Harvest | July 17 | Jul 17 – Sep 11 |
| Fall Sowing | June 29 | Jun 29 – Jul 13 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Start Indoors |
| May | Transplant Outdoors Direct Sow |
| June | Transplant Outdoors Direct Sow Fall Sowing |
| July | Fall Sowing Harvest |
| 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 4a
📆 Growing Season
122 days in Bethel Census Area
Growing Tips for Kale in Bethel Census Area
Direct sow Kale outdoors after May 22 in Bethel Census Area 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 Bethel Census Area
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 Bethel Census Area, AK?
Bethel Census Area is in Zone 4a with an average last frost of May 22. Plan your Kale planting based on this frost date — see the calendar above for exact timing.
What planting zone is Bethel Census Area, AK?
Bethel Census Area, Alaska is in USDA Hardiness Zone 4a. The average last spring frost is May 22 and first fall frost is September 21.
Your Bethel Census Area Garden Planner — Free
A 24-page printable planner built for Bethel Census Area (Zone 4a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.