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When to plant Endive in Somerset County, ME

Aim to plant Endive in Somerset County on or after May 8; the window stays open through May 29. Somerset County's 127-day frost-free season gives you just enough for one full spring planting. A second sowing from July 18 to August 1 extends the harvest into fall.

When to Plant Endive in Somerset County, ME

Somerset County, Maine Zone 5a June

June in the garden — Somerset County, Maine

We've pulled the most time-sensitive tasks for Somerset County, Maine this June and put them front and centre. Tackle them in order.

Avg. last frost May 22
Avg. first frost September 26
Soil temp (4") 66°F
Watering Low
Pest pressure High
Daylight 15.5 hrs
  1. Indoor seed-starting week for endive

    A seed-starting mix and a sunny window (or a grow light) are all you need. Keep soil warm — around 70°F — for fast germination.

Before July arrives, get these ready
  • First harvests: endive
  • Fall sowing: endive

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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.

Somerset County, Maine is in USDA Zone 5a. The average last spring frost is May 22 and the first fall frost is September 26, giving you a growing season of approximately 127 days.

At an elevation of 356 feet, Somerset County receives approximately 48.8 inches of rainfall annually with predominantly silt loam soil. Summer highs average 80°F, so choose short-season varieties of Endive to ensure they mature before fall.

Somerset County, ME (Zone 5a) Short season
127 days
Last Spring Frost May 22
127 growing days
First Fall Frost September 26

Somerset County Soil Profile

Soil Type

Silt Loam

Soil pH

4.8-6.4

Drainage

Well Drained

Endive Planting Risk Windows

Early Start (70% safe) ✓ Fits season (43 days to spare)
Start indoors: Apr 10 Transplant: May 15 🍅 Harvest: Jul 3 – Aug 7
Recommended (50%) ✓ Fits season (43 days to spare)
Start indoors: Apr 17 Transplant: May 22 🍅 Harvest: Jul 10 – Aug 14
Safe Start (90%) ✓ Fits season (46 days to spare)
Start indoors: Apr 29 Transplant: Jun 3 🍅 Harvest: Jul 22 – Aug 26

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 Somerset County

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

Soil pH

Your soil pH (4.8–6.4) overlaps with Endive's range (5.5–7.0), though not a perfect match.

Soil Texture

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

Drainage

Drainage is adequate for Endive.

Organic Matter

Organic matter is moderate (3.3%). 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

3
successive plantings in your 127-day season

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

For a dedicated fall crop, sow by Jul 18.

Endive Water Budget

Plant needs
0.7″/week
Rainfall provides
1.6″/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 2.9" 0" ❄️ Dormant
Feb 3.2" 0" ❄️ Dormant
Mar 4.5" 0" ❄️ Dormant
Apr 4.6" 0" ❄️ Dormant
May 3" 4.2" 0" ✅ Rainfall sufficient
Jun 3" 5" 0" ✅ Rainfall sufficient
Jul 3" 4" 0" ✅ Rainfall sufficient
Aug 3" 4.6" 0" ✅ Rainfall sufficient
Sep 3" 4" 0" ✅ Rainfall sufficient
Oct 4.2" 0" ❄️ Dormant
Nov 3.8" 0" ❄️ Dormant
Dec 3.9" 0" ❄️ Dormant

Water needs are for active growing months only (May–Sep in Somerset County). Supplement amounts are based on average rainfall — 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" — 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.

Endive needs ~550 GDD — county provides 1,270 GDD Excellent fit

Endive Planting Timeline — Somerset County, ME

Endive Planting Calendar

Activity When Date Range
Start Indoors April 17 Apr 17 – May 1
Transplant Outdoors May 22 May 22 – Jun 5
Direct Sow May 8 May 8 – May 29
Harvest July 10 Jul 10 – Aug 14
Fall Sowing July 18 Jul 18 – Aug 1

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

0.7"/week · Natural rainfall sufficient

📅 Days to Maturity

45–65 days

🧪 Soil pH

Needs 5.5–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 5a

📆 Growing Season

127 days in Somerset County

Growing Tips for Endive in Somerset County

Direct sow Endive outdoors after May 22 in Somerset County when soil has warmed and frost danger has passed.

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 Somerset County, ME?

Somerset County is in Zone 5a with an average last frost of May 22. Plan your Endive planting based on this frost date — see the calendar above for exact timing.

What planting zone is Somerset County, ME?

Somerset County, Maine is in USDA Hardiness Zone 5a. The average last spring frost is May 22 and first fall frost is September 26.

When should I plant Endive in Somerset County, ME?

In Somerset County, ME, plant Endive after the last frost (around May 22) and before the first frost (around September 26). Best results when soil holds above 50°F.

What growing zone is Somerset County, ME for Endive?

Somerset County sits in USDA Zone 5a. Endive grows reliably in zones 3a through 10b, so it's a good fit here.

Can Endive grow in Somerset County's climate?

Yes — Endive grows well in Somerset County's temperate climate. Somerset County averages a 127-day frost-free season, with last frost around May 22 and first frost around September 26.

🌱

Your Somerset County Garden Planner — Free

A 22-page printable planner built for Somerset County (Zone 5a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

Instant PDF download. No spam, unsubscribe any time.

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

Sources & credits

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