When to Plant Spinach in Calaveras County, CA
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.
Calaveras County, California is in USDA Zone 8a. The average last spring frost is April 8 and the first fall frost is November 12, giving you a growing season of approximately 218 days.
At an elevation of 2,363 feet, Calaveras County receives approximately 25 inches of rainfall annually with predominantly loam soil. Summer highs average 83°F, so choose short-season varieties of Spinach to ensure they mature before fall.
Calaveras County Soil Profile
Soil Type
Loam
Soil pH
6.5-7.6
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.
Plant Water Budget
Water stress score is 8/10 — consider drought-tolerant varieties and mulching
Spinach Planting Timeline — Calaveras County, CA
Spinach Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 4 | Mar 4 – Mar 18 |
| Transplant Outdoors | April 8 | Apr 8 – Apr 22 |
| Direct Sow | March 25 | Mar 25 – Apr 15 |
| Fall Sowing | September 3 | Sep 3 – Sep 17 |
| Harvest | May 13 | May 13 – Jul 15 |
Plant 0.5" deep · 6" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors Direct Sow |
| April | Transplant Outdoors Direct Sow |
| May | Harvest |
| June | Harvest |
| July | Harvest |
| August | — |
| September | Fall Sowing |
| October | — |
| November | — |
| December | — |
Growing Conditions
Sun
Partial Shade (3-6 hours)
Water
Moderate — regular watering
Days to Maturity
35–50 days
Soil pH
6.5 – 7.5
USDA Zone
Zone 8a
Growing Season
218 days
Growing Tips for Calaveras County
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
Level Up Your Garden
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 Calaveras County, CA?
Calaveras County is in Zone 8a with an average last frost of April 8. Plan your Spinach planting based on this frost date — see the calendar above for exact timing.
What planting zone is Calaveras County, CA?
Calaveras County, California is in USDA Hardiness Zone 8a. The average last spring frost is April 8 and first fall frost is November 12.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Calaveras County gardeners in Zone 8a organize planting dates, track what's growing, and never miss a planting window.
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