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When to Plant Kale in Fresno County, CA

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.

Fresno County, California is in USDA Zone 9a. The average last spring frost is March 2 and the first fall frost is November 23, giving you a growing season of approximately 266 days.

At an elevation of 2,276 feet, Fresno County receives approximately 14.9 inches of rainfall annually with predominantly loam soil. Summer highs average 100Β°F, so Kale may need afternoon shade and extra watering during peak heat. With low rainfall, drip irrigation is essential for growing Kale successfully. Mulch heavily to conserve soil moisture.

Fresno County, CA (Zone 9a) Long season
266 days
Last Spring Frost March 2
266 growing days
First Fall Frost November 23

Fresno County Soil Profile

Soil Type

Loam

Soil pH

6.5-7.5

Drainage

Well Drained

Monthly Watering Guide for Kale

Kale needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Kale Needs Rainfall You Supplement Action
Jan β€” 2.8" 0" ❄️ Dormant
Feb β€” 3.3" 0" ❄️ Dormant
Mar 4.3" 2.3" 2" πŸ’§ Light watering
Apr 4.3" 1" 3.3" 🚿 Regular watering
May 4.3" 0.4" 3.9" 🚿 Regular watering
Jun 4.3" 0.1" 4.2" 🚿 Regular watering
Jul 4.3" 0" 4.3" 🚿 Regular watering
Aug 4.3" 0" 4.3" 🚿 Regular watering
Sep 4.3" 0.2" 4.1" 🚿 Regular watering
Oct 4.3" 0.6" 3.7" 🚿 Regular watering
Nov 4.3" 1.3" 3" 🚿 Regular watering
Dec β€” 2.8" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Fresno County). Supplement amounts are based on average rainfall β€” actual needs vary with temperature, soil, and mulching.

Kale Planting Timeline β€” Fresno County, CA

Kale Planting Calendar

Activity When Date Range
Start Indoors February 2 Feb 2 – Feb 16
Transplant Outdoors March 2 Mar 2 – Mar 16
Direct Sow February 9 Feb 9 – Mar 2
Harvest April 27 Apr 27 – Jun 22
Fall Sowing September 28 Sep 28 – Oct 12

Plant 1" deep Β· 15" apart Β· Rows 24" apart

Month-by-Month Timeline

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

Growing Conditions

β˜€οΈ Sun

Full Sun (6-8+ hours)

πŸ’§ Water

Moderate β€” regular watering

πŸ“… Days to Maturity

50–70 days

πŸ§ͺ Soil pH

Needs 6–7.5 Β· Your soil: N/A

πŸ—ΊοΈ USDA Zone

Zone 9a

πŸ“† Growing Season

266 days in Fresno County

Growing Tips for Fresno 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

Check more plant combinations with our Companion Planting Checker →

🌾 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 35Β°F, under 50% humidity.

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

Frequently Asked Questions

When should I plant Kale in Fresno County, CA?

Fresno County is in Zone 9a with an average last frost of March 2. Plan your Kale planting based on this frost date β€” see the calendar above for exact timing.

What planting zone is Fresno County, CA?

Fresno County, California is in USDA Hardiness Zone 9a. The average last spring frost is March 2 and first fall frost is November 23.

🌱

Plan Your Garden with Confidence

Get our free Garden Planner β€” designed to help Fresno County gardeners in Zone 9a organize planting dates, track what's growing, and never miss a planting window.

Get Your Free Garden Planner →

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 Fresno County, CA. Local conditions may vary. Last updated: April 2026.