When to plant Celery in Three Rivers, CA
Plant Celery in Three Rivers from January 27 to February 17 in spring. Three Rivers sits in USDA Zone 9b, with last frost around February 17 and first frost on December 3. A second sowing from October 8 to October 22 extends the harvest into fall.
When to Plant Celery in Three Rivers, CA
Your July planting checklist for Tulare County, California
We've pulled the most time-sensitive tasks for Tulare County, California this July and put them front and centre. Tackle them in order.
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Harvest celery as they ripen
Check every 1–2 days. Many of these get tough or go to seed if you wait too long.
Celery is a marshland plant that requires consistent moisture and cool temperatures to produce crisp, flavorful stalks. It is a rewarding but demanding garden crop.
Three Rivers, 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 Celery may need afternoon shade and extra watering during peak heat. With low rainfall, drip irrigation is essential for growing Celery successfully. Mulch heavily to conserve soil moisture.
Three Rivers Soil Profile
Soil Type
Loam
Soil pH
5.9-7.2
Drainage
Well Drained
Celery 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 Three Rivers
How your county's soil matches Celery's growing requirements.
Soil pH
Your soil pH (5.9–7.2) overlaps with Celery's range (6.0–7.0), though not a perfect match.
Soil Texture
The loam soil in Tulare County is excellent for Celery — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (2.2%). Annual compost additions will help Celery.
How to Plant Celery
Fall planting: Sow 8 weeks before your first frost date for a fall harvest.
Succession Planting Celery
Sow every 9.1 weeks. Last sowing by Aug 05 to harvest before frost.
For a dedicated fall crop, sow by Oct 08.
Celery Water Budget
Water stress score is 8/10 — consider drought-tolerant varieties and mulching
Monthly Watering Guide for Celery
Celery needs approximately 1.3 inches of water per week (5.6" per month). Here's how your county's rainfall compares month by month.
| Month | Celery Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 3.6" | 0" | ❄️ Dormant |
| Feb | 5.6" | 3.7" | 1.9" | 💧 Light watering |
| Mar | 5.6" | 3" | 2.6" | 💧 Light watering |
| Apr | 5.6" | 1.5" | 4.1" | 🚿 Regular watering |
| May | 5.6" | 0.5" | 5.1" | 🚿 Regular watering |
| Jun | 5.6" | 0.1" | 5.5" | 🚿 Regular watering |
| Jul | 5.6" | 0" | 5.6" | 🚿 Regular watering |
| Aug | 5.6" | 0" | 5.6" | 🚿 Regular watering |
| Sep | 5.6" | 0.2" | 5.4" | 🚿 Regular watering |
| Oct | 5.6" | 0.7" | 4.9" | 🚿 Regular watering |
| Nov | 5.6" | 1.7" | 3.9" | 🚿 Regular watering |
| Dec | 5.6" | 3.4" | 2.2" | 💧 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.
Celery 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.
Celery Planting Timeline — Three Rivers, CA
Celery Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | January 20 | Jan 20 – Feb 3 |
| Transplant Outdoors | February 17 | Feb 17 – Mar 3 |
| Direct Sow | January 27 | Jan 27 – Feb 17 |
| Harvest | May 12 | May 12 – Jul 7 |
| Fall Sowing | October 8 | Oct 8 – Oct 22 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Start Indoors Direct Sow |
| February | Start Indoors Transplant Outdoors Direct Sow |
| March | Transplant Outdoors |
| April | — |
| May | Harvest |
| June | Harvest |
| July | Harvest |
| August | — |
| September | — |
| October | Fall Sowing |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
1.3"/week · 2-3 times/week
📅 Days to Maturity
80–120 days
🧪 Soil pH
Needs 6–7 · Your soil: acceptable
🗺️ USDA Zone
Zone 9b
📆 Growing Season
289 days in Tulare County
Growing Tips for Celery in Three Rivers
Direct sow Celery outdoors after February 17 in Tulare County when soil has warmed and frost danger has passed.
Common pests for Celery in this region include carrot rust fly and parsleyworm. Use row covers early in the season and inspect plants weekly.
Tulare County receives only 18" of rain annually. Celery needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.
General growing tips
Start seeds indoors 10-12 weeks before last frost. Keep soil consistently moist and never let it dry out. Blanch stalks by mounding soil or using collars for milder flavor.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Celery in Other Locations
When should I plant Celery in Three Rivers, CA?
In Three Rivers, CA, plant Celery after the last frost (around February 17) and before the first frost (around December 3). Best results when soil holds above 50°F.
What growing zone is Three Rivers, CA for Celery?
Three Rivers sits in USDA Zone 9b. Celery grows reliably in zones 2a through 10b, so it's a good fit here.
Can Celery grow in Three Rivers's climate?
Yes — Celery grows well in Three Rivers's temperate climate. Three Rivers averages a 290-day frost-free season, with last frost around February 17 and first frost around December 3.
Your Tulare County Garden Planner — Free
A 22-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.