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When to Plant Celtuce in Piscataquis County, ME

Piscataquis County, Maine Zone 5a May

Your May game plan for Piscataquis County, Maine

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

Avg. last frost May 19
Avg. first frost September 28
Soil temp (4") 52°F
Watering Low
Pest pressure Low
Daylight 14.7 hrs
  1. Harden off and plant celtuce

    Your last frost (May 19) has passed. These warm-season crops can handle outdoor soil now.

  2. Seed celtuce outdoors

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

June will be here before you know it — start on
  • Starting indoors: celtuce

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Celtuce (stem lettuce) is a Chinese vegetable grown for its thick, crunchy stem rather than its leaves. The peeled stem has a mild, cucumber-like flavor.

Piscataquis County, Maine is in USDA Zone 5a. The average last spring frost is May 19 and the first fall frost is September 28, giving you a growing season of approximately 132 days.

At an elevation of 727 feet, Piscataquis County receives approximately 49.6 inches of rainfall annually with predominantly silt loam soil. Summer highs average 78°F, so choose short-season varieties of Celtuce to ensure they mature before fall.

Piscataquis County, ME (Zone 5a) Short season
132 days
Last Spring Frost May 19
132 growing days
First Fall Frost September 28
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Piscataquis County Soil Profile

Soil Type

Silt Loam

Soil pH

5-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (25 days to spare)
Start indoors: Apr 10 Transplant: May 15 🍅 Harvest: Jul 17 – Aug 28
Recommended (50%) ✓ Fits season (27 days to spare)
Start indoors: Apr 14 Transplant: May 19 🍅 Harvest: Jul 21 – Sep 1
Safe Start (90%) ✓ Fits season (33 days to spare)
Start indoors: Apr 27 Transplant: Jun 1 🍅 Harvest: Aug 3 – Sep 14

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 Piscataquis County

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

Soil pH

Your soil pH (5.0–6.5) is more acidic than Celtuce prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

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

Organic Matter

Organic matter is moderate (3.3%). Annual compost additions will help Celtuce.

How to Plant Celtuce

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 Celtuce

2
successive plantings in your 132-day season

Sow every 6.9 weeks. Last sowing by Jun 30 to harvest before frost.

For a dedicated fall crop, sow by Jul 20.

Plant 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 Celtuce

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

Month Celtuce Needs Rainfall You Supplement Action
Jan 3.5" 0" ❄️ Dormant
Feb 3.6" 0" ❄️ Dormant
Mar 4.5" 0" ❄️ Dormant
Apr 4.4" 0" ❄️ Dormant
May 3" 4.8" 0" ✅ Rainfall sufficient
Jun 3" 5.1" 0" ✅ Rainfall sufficient
Jul 3" 5" 0" ✅ Rainfall sufficient
Aug 3" 3.9" 0" ✅ Rainfall sufficient
Sep 3" 4.6" 0" ✅ Rainfall sufficient
Oct 3.8" 0" ❄️ Dormant
Nov 3.2" 0" ❄️ Dormant
Dec 3.2" 0" ❄️ Dormant

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

Celtuce 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.

Celtuce needs ~638 GDD — county provides 1,122 GDD Excellent fit

Celtuce Planting Timeline — Piscataquis County, ME

Celtuce Planting Calendar

Activity When Date Range
Start Indoors April 14 Apr 14 – Apr 28
Transplant Outdoors May 19 May 19 – Jun 2
Direct Sow May 5 May 5 – May 26
Harvest July 21 Jul 21 – Sep 1
Fall Sowing July 20 Jul 20 – Aug 3

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 Harvest
August Fall Sowing Harvest
September Harvest
October
November
December
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Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.7"/week · Natural rainfall sufficient

📅 Days to Maturity

60–90 days

🧪 Soil pH

Needs 6–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 5a

📆 Growing Season

132 days in Piscataquis County

Growing Tips for Celtuce in Piscataquis County

Direct sow Celtuce outdoors after May 19 in Piscataquis County when soil has warmed and frost danger has passed.

Common pests for Celtuce 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 start indoors. Space 12 inches apart. Harvest when stems are about 1 inch in diameter. Peel the tough outer skin to reveal the tender center.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Celtuce in Piscataquis County, ME?

Piscataquis County is in Zone 5a with an average last frost of May 19. Plan your Celtuce planting based on this frost date — see the calendar above for exact timing.

What planting zone is Piscataquis County, ME?

Piscataquis County, Maine is in USDA Hardiness Zone 5a. The average last spring frost is May 19 and first fall frost is September 28.

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Your Piscataquis County Garden Planner — Free

A 24-page printable planner built for Piscataquis 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.

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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 Piscataquis County, ME. 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.