When to plant Spinach in Bethel Census Area, AK
Plant Spinach in Bethel Census Area from May 15 to June 5 in spring. Bethel Census Area sits in USDA Zone 4a, with last frost around May 22 and first frost on September 21. A second sowing from June 29 to July 13 extends the harvest into fall.
When to Plant Spinach in Bethel Census Area, AK
Bethel Census Area, Alaska gardeners: here's your June plan
Here's what deserves your attention in Bethel Census Area, Alaska this month. Everything below is tailored to Zone 4a and timed around your local frost dates.
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Pick spinach
Morning harvests are best — cooler temperatures mean crisper produce and longer fridge life.
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Sow spinach for an autumn harvest
Keep young seedlings shaded and moist in summer heat. A row of taller crops works as natural shade.
Get ahead of July
- Starting indoors: spinach
- First harvests: spinach
Spinach is a nutrient-packed cool-season green that grows quickly in spring and fall. It is rich in iron, vitamins, and antioxidants and excellent raw or cooked.
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 Spinach to ensure they mature before fall. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Spinach root diseases.
Bethel Census Area Soil Profile
Soil Type
Silt Loam
Soil pH
5.2-6.3
Drainage
Well Drained
Spinach 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 Spinach's growing requirements.
Soil pH
Your soil pH (5.2–6.3) is more acidic than Spinach prefers (6.5–7.5). Add garden lime to raise pH.
Soil Texture
The silt loam soil in Bethel Census Area is excellent for Spinach — good drainage, moisture retention, and nutrient holding capacity.
Drainage
Drainage is adequate for Spinach.
Organic Matter
Organic matter is excellent (5.8%) — Spinach will thrive.
How to Plant Spinach
Fall planting: Sow 12 weeks before your first frost date for a fall harvest.
Succession Planting Spinach
Sow every 4 weeks. Last sowing by Aug 02 to harvest before frost.
For a dedicated fall crop, sow by Jun 29.
Spinach Water Budget
Monthly Watering Guide for Spinach
Spinach needs approximately 0.7 inches of water per week (3" per month). Here's how your county's rainfall compares month by month.
| Month | Spinach 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" | 1.8" | 1.2" | 💧 Light watering |
| Jun | 3" | 4" | 0" | ✅ Rainfall sufficient |
| Jul | 3" | 6.3" | 0" | ✅ Rainfall sufficient |
| Aug | 3" | 7.6" | 0" | ✅ Rainfall sufficient |
| Sep | 3" | 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.
Spinach 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.
Spinach Planting Timeline — Bethel Census Area, AK
Spinach 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 | June 26 | Jun 26 – Aug 28 |
| Fall Sowing | June 29 | Jun 29 – Jul 13 |
Plant 0.5" deep · 6" apart · Rows 12" 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 Harvest |
| July | Fall Sowing Harvest |
| August | Harvest |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Partial Shade (3-6 hours)
💧 Water
0.7"/week · Natural rainfall sufficient
📅 Days to Maturity
35–50 days
🧪 Soil pH
Needs 6.5–7.5 · Your soil: too_acidic
🗺️ USDA Zone
Zone 4a
📆 Growing Season
122 days in Bethel Census Area
Growing Tips for Spinach in Bethel Census Area
Direct sow Spinach outdoors after May 22 in Bethel Census Area when soil has warmed and frost danger has passed.
General growing tips
Direct sow as soon as soil can be worked in spring. Plant in partial shade for summer crops to delay bolting. Succession plant every 2 weeks for continuous harvest.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Wind pollinated — isolate 1/2 mile for purity. Easy to let bolt in heat.
Spinach in Other Locations
Frequently Asked Questions
When should I plant Spinach in Bethel Census Area, AK?
Bethel Census Area is in Zone 4a with an average last frost of May 22. Plan your Spinach 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.
When should I plant Spinach in Bethel Census Area, AK?
In Bethel Census Area, AK, plant Spinach after the last frost (around May 22) and before the first frost (around September 21). Best results when soil holds above 50°F.
What growing zone is Bethel Census Area, AK for Spinach?
Bethel Census Area sits in USDA Zone 4a. Spinach grows reliably in zones 2a through 10b, so it's a good fit here.
Can Spinach grow in Bethel Census Area's climate?
Yes — Spinach grows well in Bethel Census Area's temperate climate. Bethel Census Area averages a 122-day frost-free season, with last frost around May 22 and first frost around September 21.
Your Bethel Census Area Garden Planner — Free
A 22-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.