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When to Plant Kale in Gila County, AZ

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.

Gila County, Arizona is in USDA Zone 7b. The average last spring frost is February 13 and the first fall frost is December 5, giving you a growing season of approximately 295 days.

At an elevation of 3,643 feet, Gila County receives approximately 9.3 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 94ยฐF, providing good warmth for Kale during the growing season. Sandy soil warms quickly in spring โ€” great for early planting โ€” but Kale will need more frequent watering and organic matter to retain nutrients. With low rainfall, drip irrigation is essential for growing Kale successfully. Mulch heavily to conserve soil moisture.

Gila County, AZ (Zone 7b) Year-round
295 days
Last Spring Frost February 13
295 growing days
First Fall Frost December 5

Gila County Soil Profile

Soil Type

Sandy Loam

Soil pH

6.7-8.4

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (185 days to spare)
Start indoors: Dec 30 Transplant: Feb 3 🍅 Harvest: Mar 31 – May 26
Recommended (50%) ✓ Fits season (183 days to spare)
Start indoors: Jan 9 Transplant: Feb 13 🍅 Harvest: Apr 10 – Jun 5
Safe Start (90%) ✓ Fits season (164 days to spare)
Start indoors: Feb 17 Transplant: Mar 24 🍅 Harvest: May 19 – Jul 14

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

Plant needs
1.0″/week
Rainfall provides
0.1″/week
You supply
1.4″/week
Watering frequency 2-3 times/week
Season total 3,693 gal / 100 sq ft
Drought risk

Water stress score is 10/10 โ€” consider drought-tolerant varieties and mulching

Kale needs ~1,230 GDD — county provides 6,068 GDD Excellent fit

Kale Planting Timeline โ€” Gila County, AZ

Kale Planting Calendar

Activity When Date Range
Start Indoors January 9 Jan 9 โ€“ Jan 23
Transplant Outdoors February 13 Feb 13 โ€“ Feb 27
Direct Sow January 30 Jan 30 โ€“ Feb 20
Fall Sowing September 26 Sep 26 โ€“ Oct 10
Harvest April 10 Apr 10 โ€“ Jun 5

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

Month-by-Month Timeline

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

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

50โ€“70 days

Soil pH

6 โ€“ 7.5

USDA Zone

Zone 7b

Growing Season

295 days

Growing Tips for Gila County

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.

Companion Planting

Good Companions

Avoid Planting Near

  • Strawberries
  • Tomatoes

Level Up Your Garden

๐ŸŒพ Save Your Own Kale Seeds
Life Cycle Biennial
Pollination Cross-Pollinated (insects)
How to Collect Allow 2nd year flower stalks to dry. Harvest pods when tan.
Storage Store airtight; viable 5 years at 35ยฐF, under 50% humidity.

Isolate 1/2 mile from other brassicas (broccoli, cabbage, etc.) โ€” they all cross.

Frequently Asked Questions

When should I plant Kale in Gila County, AZ?

Gila County is in Zone 7b with an average last frost of February 13. Plan your Kale planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Gila County, AZ?

Gila County, Arizona is in USDA Hardiness Zone 7b. The average last spring frost is February 13 and first fall frost is December 5.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Gila County gardeners in Zone 7b organize planting dates, track what's growing, and never miss a planting window.

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Free download. Plan your entire garden season in minutes.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Gila County, AZ. Local conditions may vary. Last updated: April 2026.