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When to Plant Belgian Endive in McKean County, PA

McKean County, Pennsylvania Zone 5b May

May in the garden — McKean County, Pennsylvania

We've pulled the most time-sensitive tasks for McKean County, Pennsylvania this May and put them front and centre. Tackle them in order.

Avg. last frost May 18
Avg. first frost October 4
Soil temp (4") 59°F
Watering Moderate
Pest pressure Low
Daylight 14.4 hrs
  1. Move belgian endive from tray to bed

    Frost risk is low now in McKean County, Pennsylvania. If you've been covering beds overnight, you can stop.

  2. Outdoor sowing time: belgian endive

    Thin ruthlessly once seedlings are up. Crowded roots mean smaller crops from every plant.

June prep starts now
  • Starting indoors: belgian endive

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Belgian endive is produced by forcing chicory roots in darkness to create tight, pale, torpedo-shaped heads called chicons. They have a mild bitterness and elegant crunch.

McKean County, Pennsylvania is in USDA Zone 5b. The average last spring frost is May 18 and the first fall frost is October 4, giving you a growing season of approximately 139 days.

At an elevation of 991 feet, McKean County receives approximately 39 inches of rainfall annually with predominantly silt loam soil. Summer highs average 85°F, providing good warmth for Belgian Endive during the growing season.

McKean County, PA (Zone 5b) Short season
139 days
Last Spring Frost May 18
139 growing days
First Fall Frost October 4

McKean County Soil Profile

Soil Type

Silt Loam

Soil pH

5-6.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Start indoors: Apr 7 Transplant: May 12 🍅 Harvest: Sep 1 – Oct 27
Recommended (50%) ✗ May not fit
Start indoors: Apr 13 Transplant: May 18 🍅 Harvest: Sep 7 – Nov 2
Safe Start (90%) ✗ May not fit
Start indoors: May 3 Transplant: Jun 7 🍅 Harvest: Sep 27 – Nov 22

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 McKean County

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

Soil pH

Your soil pH (5.0–6.7) overlaps with Belgian Endive's range (5.5–7.0), though not a perfect match.

Soil Texture

The silt loam soil in McKean County is excellent for Belgian Endive — good drainage, moisture retention, and nutrient holding capacity.

Drainage

Drainage is adequate for Belgian Endive.

Organic Matter

Organic matter is moderate (3.1%). Annual compost additions will help Belgian Endive.

How to Plant Belgian 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.

Plant Water Budget

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

Monthly Watering Guide for Belgian Endive

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

Month Belgian Endive Needs Rainfall You Supplement Action
Jan 2.7" 0" ❄️ Dormant
Feb 2.2" 0" ❄️ Dormant
Mar 3.5" 0" ❄️ Dormant
Apr 3.6" 0" ❄️ Dormant
May 4.3" 3.6" 0.7" 💧 Light watering
Jun 4.3" 3.4" 0.9" 💧 Light watering
Jul 4.3" 4.2" 0.1" 💧 Light watering
Aug 4.3" 3.2" 1.1" 💧 Light watering
Sep 4.3" 3.1" 1.2" 💧 Light watering
Oct 4.3" 3.2" 1.1" 💧 Light watering
Nov 3.1" 0" ❄️ Dormant
Dec 3" 0" ❄️ Dormant

Water needs are for active growing months only (May–Oct in McKean County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Belgian 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" — 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.

Belgian Endive needs ~1,788 GDD — county provides 1,911 GDD Good fit

Belgian Endive Planting Timeline — McKean County, PA

Belgian Endive Planting Calendar

Activity When Date Range
Start Indoors April 13 Apr 13 – Apr 27
Transplant Outdoors May 18 May 18 – Jun 1
Direct Sow May 4 May 4 – May 25
Harvest September 7 Sep 7 – Nov 2
Fall Sowing July 26 Jul 26 – Aug 9

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

1"/week · Natural rainfall sufficient

📅 Days to Maturity

110–150 days

🧪 Soil pH

Needs 5.5–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 5b

📆 Growing Season

139 days in McKean County

Growing Tips for Belgian Endive in McKean County

Direct sow Belgian Endive outdoors after May 18 in McKean County when soil has warmed and frost danger has passed.

Your 139.0-day growing season in McKean County is tight for Belgian Endive (110.0-150.0 days to maturity). Start indoors and choose early-maturing varieties.

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

General growing tips

Grow chicory roots in the garden during summer, then dig in fall. Trim tops and force roots in moist sand in a dark cellar at 50-60F. Chicons emerge in 3-4 weeks.

Companion Planting

Good Companions

Avoid Planting Near

  • Fennel

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Belgian Endive in McKean County, PA?

McKean County is in Zone 5b with an average last frost of May 18. Plan your Belgian Endive planting based on this frost date — see the calendar above for exact timing.

What planting zone is McKean County, PA?

McKean County, Pennsylvania is in USDA Hardiness Zone 5b. The average last spring frost is May 18 and first fall frost is October 4.

🌱

Your McKean County Garden Planner — Free

A 24-page printable planner built for McKean County (Zone 5b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

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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 McKean County, PA. Local conditions may vary. Last updated: May 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.