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When to Plant Endive in Westmoreland County, PA

Endive is a leafy green with a slightly bitter flavor, available in curly (frisee) and broad-leaved (escarole) types. It adds texture and complexity to salads.

Westmoreland County, Pennsylvania is in USDA Zone 6a. The average last spring frost is April 23 and the first fall frost is October 27, giving you a growing season of approximately 187 days.

At an elevation of 894 feet, Westmoreland County receives approximately 38.6 inches of rainfall annually with predominantly silt loam soil. Summer highs average 91ยฐF, providing good warmth for Endive during the growing season.

Westmoreland County, PA (Zone 6a) Moderate season
187 days
Last Spring Frost April 23
187 growing days
First Fall Frost October 27

Westmoreland County Soil Profile

Soil Type

Silt Loam

Soil pH

4.8-6.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (104 days to spare)
Start indoors: Mar 9 Transplant: Apr 13 🍅 Harvest: Jun 1 – Jul 6
Recommended (50%) ✓ Fits season (103 days to spare)
Start indoors: Mar 19 Transplant: Apr 23 🍅 Harvest: Jun 11 – Jul 16
Safe Start (90%) ✓ Fits season (102 days to spare)
Start indoors: Mar 31 Transplant: May 5 🍅 Harvest: Jun 23 – Jul 28

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 Westmoreland County

How your county's soil matches Endive's growing requirements.

Soil pH

Your soil pH (4.8โ€“6.2) overlaps with Endive's range (5.5โ€“7.0), though not a perfect match.

Soil Texture

The silt loam soil in Westmoreland County is excellent for Endive โ€” good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (3.4%). Annual compost additions will help Endive.

How to Plant Endive

0.5"
Planting Depth
6"
Between Plants
12"
Between Rows

Fall planting: Sow 10 weeks before your first frost date for a fall harvest.

Succession Planting Endive

4
successive plantings in your 187-day season

Sow every 5.1 weeks. Last sowing by Aug 23 to harvest before frost.

For a dedicated fall crop, sow by Aug 18.

Plant Water Budget

Plant needs
0.7″/week
Rainfall provides
0.9″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

Monthly Watering Guide for Endive

Endive needs approximately 0.7 inches of water per week (3" per month). Here's how your county's rainfall compares month by month.

Month Endive Needs Rainfall You Supplement Action
Jan โ€” 2.3" 0" โ„๏ธ Dormant
Feb โ€” 2.4" 0" โ„๏ธ Dormant
Mar โ€” 3.1" 0" โ„๏ธ Dormant
Apr 3" 3.4" 0" โœ… Rainfall sufficient
May 3" 3.5" 0" โœ… Rainfall sufficient
Jun 3" 3.8" 0" โœ… Rainfall sufficient
Jul 3" 4.3" 0" โœ… Rainfall sufficient
Aug 3" 3.8" 0" โœ… Rainfall sufficient
Sep 3" 3.2" 0" โœ… Rainfall sufficient
Oct 3" 3.2" 0" โœ… Rainfall sufficient
Nov โ€” 3.1" 0" โ„๏ธ Dormant
Dec โ€” 2.6" 0" โ„๏ธ Dormant

Water needs are for active growing months only (Aprโ€“Oct in Westmoreland County). Supplement amounts are based on average rainfall โ€” actual needs vary with temperature, soil, and mulching.

Endive 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" โ€” every day above 50ยฐF 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.

Endive needs ~1,004 GDD — county provides 3,412 GDD Excellent fit

Endive Planting Timeline โ€” Westmoreland County, PA

Endive Planting Calendar

Activity When Date Range
Start Indoors March 19 Mar 19 โ€“ Apr 2
Transplant Outdoors April 23 Apr 23 โ€“ May 7
Direct Sow April 9 Apr 9 โ€“ Apr 30
Harvest June 11 Jun 11 โ€“ Jul 16
Fall Sowing August 18 Aug 18 โ€“ Sep 1

Plant 0.5" deep ยท 6" apart ยท Rows 12" apart

Month-by-Month Timeline

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

Growing Conditions

โ˜€๏ธ Sun

Partial Shade (3-6 hours)

๐Ÿ’ง Water

0.7"/week ยท Natural rainfall sufficient

๐Ÿ“… Days to Maturity

45โ€“65 days

๐Ÿงช Soil pH

Needs 5.5โ€“7 ยท Your soil: acceptable

๐Ÿ—บ๏ธ USDA Zone

Zone 6a

๐Ÿ“† Growing Season

187 days in Westmoreland County

Growing Tips for Endive in Westmoreland County

Direct sow Endive outdoors after April 23 in Westmoreland County when soil has warmed and frost danger has passed.

Your generous 187.0-day season in Westmoreland County allows multiple plantings of Endive. Sow every 22.0 days for continuous harvest.

Common pests for Endive in this region include aphids and slugs. Use row covers early in the season and inspect plants weekly.

General growing tips

Sow seeds directly in spring or fall. Blanch heads by tying outer leaves together 2-3 weeks before harvest to reduce bitterness. Keep soil evenly moist.

Companion Planting

Good Companions

Avoid Planting Near

  • Fennel

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Endive in Westmoreland County, PA?

Westmoreland County is in Zone 6a with an average last frost of April 23. Plan your Endive planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Westmoreland County, PA?

Westmoreland County, Pennsylvania is in USDA Hardiness Zone 6a. The average last spring frost is April 23 and first fall frost is October 27.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Westmoreland County gardeners in Zone 6a organize planting dates, track what's growing, and never miss a planting window.

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