When to plant Escarole in Proberta, CA
Proberta sits in USDA Zone 9b. Plant Escarole between February 13 (after last frost on March 6) and March 6. A second sowing from October 3 to October 17 extends the harvest into fall.
When to Plant Escarole in Proberta, CA
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Escarole is a broad-leaved endive with slightly bitter, sturdy leaves. The outer leaves are more bitter while the blanched heart is tender and mild.
Proberta, California is in USDA Zone 9b. The average last spring frost is March 6 and the first fall frost is November 28, giving you a growing season of approximately 267 days.
At an elevation of 78 feet, Tehama County receives approximately 44 inches of rainfall annually with predominantly loam soil. Summer highs average 82°F, so choose short-season varieties of Escarole to ensure they mature before fall.
Proberta Soil Profile
Soil Type
Loam
Soil pH
6.8-7.6
Drainage
Well Drained
Escarole 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 Proberta
How your county's soil matches Escarole's growing requirements.
Soil pH
Your soil pH (6.8–7.6) is more alkaline than Escarole prefers (5.5–7.0). Add sulfur or peat moss to lower pH.
Soil Texture
The loam soil in Tehama County is excellent for Escarole — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (2.9%). Annual compost additions will help Escarole.
How to Plant Escarole
Fall planting: Sow 8 weeks before your first frost date for a fall harvest.
Succession Planting Escarole
Sow every 5.7 weeks. Last sowing by Sep 19 to harvest before frost.
For a dedicated fall crop, sow by Oct 03.
Escarole Water Budget
Water stress score is 8/10 — consider drought-tolerant varieties and mulching
Monthly Watering Guide for Escarole
Escarole needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.
| Month | Escarole Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 10.2" | 0" | ❄️ Dormant |
| Feb | — | 8.5" | 0" | ❄️ Dormant |
| Mar | 4.3" | 7" | 0" | ✅ Rainfall sufficient |
| Apr | 4.3" | 3.5" | 0.8" | 💧 Light watering |
| May | 4.3" | 1.3" | 3" | 🚿 Regular watering |
| Jun | 4.3" | 0.2" | 4.1" | 🚿 Regular watering |
| Jul | 4.3" | 0" | 4.3" | 🚿 Regular watering |
| Aug | 4.3" | 0" | 4.3" | 🚿 Regular watering |
| Sep | 4.3" | 0.4" | 3.9" | 🚿 Regular watering |
| Oct | 4.3" | 1.8" | 2.5" | 🚿 Regular watering |
| Nov | 4.3" | 4.2" | 0.1" | 💧 Light watering |
| Dec | — | 6.9" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Nov in Tehama County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Escarole 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.
Escarole Planting Timeline — Proberta, CA
Escarole Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | February 6 | Feb 6 – Feb 20 |
| Transplant Outdoors | March 6 | Mar 6 – Mar 20 |
| Direct Sow | February 13 | Feb 13 – Mar 6 |
| Harvest | May 1 | May 1 – May 29 |
| Fall Sowing | October 3 | Oct 3 – Oct 17 |
Plant 0.5" deep · 6" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Start Indoors Direct Sow |
| March | Transplant Outdoors Direct Sow |
| April | — |
| May | Harvest |
| June | — |
| July | — |
| August | — |
| September | — |
| October | Fall Sowing |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Partial Shade (3-6 hours)
💧 Water
1"/week · 1-2 times/week
📅 Days to Maturity
50–70 days
🧪 Soil pH
Needs 5.5–7 · Your soil: too_alkaline
🗺️ USDA Zone
Zone 9b
📆 Growing Season
267 days in Tehama County
Growing Tips for Escarole in Proberta
Direct sow Escarole outdoors after March 06 in Tehama County when soil has warmed and frost danger has passed.
Common pests for Escarole in this region include aphids and slugs. Use row covers early in the season and inspect plants weekly.
General growing tips
Direct sow in spring or late summer. Blanch heads by tying outer leaves together or covering with a pot for 2 weeks before harvest. Excellent braised or in soups.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Escarole in Other Locations
When should I plant Escarole in Proberta, CA?
In Proberta, CA, plant Escarole after the last frost (around March 6) and before the first frost (around November 28). Best results when soil holds above 50°F.
What growing zone is Proberta, CA for Escarole?
Proberta sits in USDA Zone 9b. Escarole grows reliably in zones 3a through 10b, so it's a good fit here.
Can Escarole grow in Proberta's climate?
Yes — Escarole grows well in Proberta's temperate climate. Proberta averages a 267-day frost-free season, with last frost around March 6 and first frost around November 28.
Your Tehama County Garden Planner — Free
A 22-page printable planner built for Tehama 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.