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When to Plant Zucchini in Piscataquis County, ME

Piscataquis County, Maine Zone 5a May

May in the garden — Piscataquis County, Maine

Your garden in Piscataquis County, Maine is working on a schedule, even when you're not. Here's where you should be this May.

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. Direct-sow zucchini

    Sow every 2 weeks for a continuous harvest. A single big planting means a single big glut.

Coming up in June — start thinking about
  • Transplants going out: zucchini
  • Starting indoors: zucchini

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Zucchini is an incredibly prolific summer squash that can produce an abundance of fruit from just a few plants. It is versatile in the kitchen from grilling to baking.

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 Zucchini 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

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 (11 days to spare)
Start indoors: Apr 10 Transplant: May 29 🍅 Harvest: Jul 17 – Sep 11
Recommended (50%) ✓ Fits season (13 days to spare)
Start indoors: Apr 14 Transplant: Jun 2 🍅 Harvest: Jul 21 – Sep 15
Safe Start (90%) ✓ Fits season (19 days to spare)
Start indoors: Apr 27 Transplant: Jun 15 🍅 Harvest: Aug 3 – Sep 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 Piscataquis County

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

Soil pH

Your soil pH (5.0–6.5) is more acidic than Zucchini prefers (6.0–7.5). Add garden lime to raise pH.

Soil Texture

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

Organic Matter

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

How to Plant Zucchini

1"
Planting Depth
30"
Between Plants
42"
Between Rows

Succession Planting Zucchini

3
successive plantings in your 132-day season

Sow every 5.1 weeks. Last sowing by Jul 30 to harvest before frost.

Plant Water Budget

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

Monthly Watering Guide for Zucchini

Zucchini needs approximately 1.2 inches of water per week (5.2" per month). Here's how your county's rainfall compares month by month.

Month Zucchini 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 5.2" 4.8" 0.4" 💧 Light watering
Jun 5.2" 5.1" 0.1" 💧 Light watering
Jul 5.2" 5" 0.2" 💧 Light watering
Aug 5.2" 3.9" 1.3" 💧 Light watering
Sep 5.2" 4.6" 0.6" 💧 Light watering
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.

Zucchini 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.

Zucchini needs ~446 GDD — county provides 1,122 GDD Excellent fit

Zucchini Planting Timeline — Piscataquis County, ME

Zucchini Planting Calendar

Activity When Date Range
Start Indoors April 14 Apr 14 – Apr 28
Transplant Outdoors June 2 Jun 2 – Jun 16
Direct Sow May 26 May 26 – Jun 16
Harvest July 21 Jul 21 – Sep 15

Plant 1" deep · 30" apart · Rows 42" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.2"/week · Natural rainfall sufficient

📅 Days to Maturity

45–60 days

🧪 Soil pH

Needs 6–7.5 · Your soil: too_acidic

🗺️ USDA Zone

Zone 5a

📆 Growing Season

132 days in Piscataquis County

Growing Tips for Zucchini in Piscataquis County

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

Common pests for Zucchini in this region include squash vine borer and cucumber beetles. Use row covers early in the season and inspect plants weekly.

General growing tips

Direct sow after last frost. Harvest when fruits are 6-8 inches long for best flavor and texture. Check plants daily in summer as fruits can double in size overnight.

Recommended Zucchini Varieties for Piscataquis County

Quick-producing varieties for shorter seasons

Black Beauty (50d) Raven (48d) Eight Ball (40d)

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Zucchini in Piscataquis County, ME?

Piscataquis County is in Zone 5a with an average last frost of May 19. Plan your Zucchini 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.

🌱

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.