When to Plant Zucchini in Tulare County, CA
Top priorities for Tulare County, California gardeners in May
May rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Tulare County, California.
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It's harvest week for zucchini
Check every 1–2 days. Many of these get tough or go to seed if you wait too long.
June will be here before you know it — start on
- First harvests: zucchini
Zucchini is an incredibly prolific summer squash that can produce an abundance of fruit from just a few plants. It is versatile in the kitchen from grilling to baking.
Tulare County, California is in USDA Zone 9b. The average last spring frost is February 17 and the first fall frost is December 3, giving you a growing season of approximately 289 days.
At an elevation of 5,836 feet, Tulare County receives approximately 18.4 inches of rainfall annually with predominantly loam soil. Summer highs average 95°F, so Zucchini may need afternoon shade and extra watering during peak heat. With low rainfall, drip irrigation is essential for growing Zucchini successfully. Mulch heavily to conserve soil moisture.
Tulare County Soil Profile
Soil Type
Loam
Soil pH
5.9-7.2
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 Tulare County
How your county's soil matches Zucchini's growing requirements.
Soil pH
Your soil pH (5.9–7.2) overlaps with Zucchini's range (6.0–7.5), though not a perfect match.
Soil Texture
The loam soil in Tulare County is excellent for Zucchini — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (2.2%). Annual compost additions will help Zucchini.
How to Plant Zucchini
Succession Planting Zucchini
Sow every 5.1 weeks. Last sowing by Oct 04 to harvest before frost.
Plant Water Budget
Water stress score is 8/10 — consider drought-tolerant varieties and mulching
Monthly Watering Guide for Zucchini
Zucchini needs approximately 1.2 inches of water per week (5.2" per month). Here's how your county's rainfall compares month by month.
| Month | Zucchini Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 3.6" | 0" | ❄️ Dormant |
| Feb | 5.2" | 3.7" | 1.5" | 💧 Light watering |
| Mar | 5.2" | 3" | 2.2" | 💧 Light watering |
| Apr | 5.2" | 1.5" | 3.7" | 🚿 Regular watering |
| May | 5.2" | 0.5" | 4.7" | 🚿 Regular watering |
| Jun | 5.2" | 0.1" | 5.1" | 🚿 Regular watering |
| Jul | 5.2" | 0" | 5.2" | 🚿 Regular watering |
| Aug | 5.2" | 0" | 5.2" | 🚿 Regular watering |
| Sep | 5.2" | 0.2" | 5" | 🚿 Regular watering |
| Oct | 5.2" | 0.7" | 4.5" | 🚿 Regular watering |
| Nov | 5.2" | 1.7" | 3.5" | 🚿 Regular watering |
| Dec | 5.2" | 3.4" | 1.8" | 💧 Light watering |
Water needs are for active growing months only (Feb–Dec in Tulare County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Zucchini 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.
Zucchini Planting Timeline — Tulare County, CA
Zucchini Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | January 20 | Jan 20 – Feb 3 |
| Transplant Outdoors | February 24 | Feb 24 – Mar 10 |
| Direct Sow | February 17 | Feb 17 – Mar 10 |
| Harvest | April 14 | Apr 14 – Jun 9 |
Plant 1" deep · 30" apart · Rows 42" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Start Indoors |
| February | Start Indoors Transplant Outdoors Direct Sow |
| March | Transplant Outdoors Direct Sow |
| April | Harvest |
| May | Harvest |
| June | Harvest |
| July | — |
| August | — |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
1.2"/week · 2-3 times/week
📅 Days to Maturity
45–60 days
🧪 Soil pH
Needs 6–7.5 · Your soil: acceptable
🗺️ USDA Zone
Zone 9b
📆 Growing Season
289 days in Tulare County
Growing Tips for Zucchini in Tulare County
Direct sow Zucchini outdoors after February 17 in Tulare County when soil has warmed and frost danger has passed.
Your generous 290.0-day season in Tulare County allows multiple plantings of Zucchini. Sow every 22.0 days for continuous harvest.
Common pests for Zucchini in this region include squash vine borer and cucumber beetles. Use row covers early in the season and inspect plants weekly.
Tulare County receives only 18" of rain annually. Zucchini needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.
General growing tips
Direct sow after last frost. Harvest when fruits are 6-8 inches long for best flavor and texture. Check plants daily in summer as fruits can double in size overnight.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Zucchini in Other Locations
Frequently Asked Questions
When should I plant Zucchini in Tulare County, CA?
Tulare County is in Zone 9b with an average last frost of February 17. Plan your Zucchini planting based on this frost date — see the calendar above for exact timing.
What planting zone is Tulare County, CA?
Tulare County, California is in USDA Hardiness Zone 9b. The average last spring frost is February 17 and first fall frost is December 3.
Your Tulare County Garden Planner — Free
A 24-page printable planner built for Tulare County (Zone 9b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.