Blog

When to plant Melon in Aroostook County County,

Aroostook County County's short 129-day growing season means one Melon planting between June 1 and June 22. No fall crop in Zone 4a.

When to Plant Melon in Aroostook County, ME

Aroostook County, Maine Zone 4a June

What to do in June

Welcome to June in Zone 4a. These are the moves that will have the biggest impact on your growing season.

Avg. last frost May 18
Avg. first frost September 24
Soil temp (4") 61°F
Watering Moderate
Pest pressure Moderate
Daylight 15.6 hrs
  1. Move melon into the garden

    Your last frost (May 18) has passed. These warm-season crops can handle outdoor soil now.

  2. Sow melon where they'll grow

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

  3. Begin indoor sowing: melon

    Label every cell. You will absolutely forget which is which otherwise.

Instant PDF download. No spam, unsubscribe any time.

Melons are warm-season vine crops that produce sweet, juicy fruits in many varieties including muskmelon and honeydew. They need a long, hot growing season.

Aroostook County, Maine is in USDA Zone 4a. The average last spring frost is May 18 and the first fall frost is September 24, giving you a growing season of approximately 129 days.

At an elevation of 314 feet, Aroostook County receives approximately 39.5 inches of rainfall annually with predominantly silt loam soil. Summer highs average 78°F, so choose short-season varieties of Melon to ensure they mature before fall.

Aroostook County, ME (Zone 4a) Short season
129 days
Last Spring Frost May 18
129 growing days
First Fall Frost September 24
Share this guide:

Aroostook County Soil Profile

Soil Type

Silt Loam

Soil pH

4.9-6.3

Drainage

Well Drained

Melon Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Start indoors: Mar 31 Transplant: Jun 2 🍅 Harvest: Aug 11 – Sep 29
Recommended (50%) ✗ May not fit
Start indoors: Apr 6 Transplant: Jun 8 🍅 Harvest: Aug 17 – Oct 5
Safe Start (90%) ✗ May not fit
Start indoors: Apr 20 Transplant: Jun 22 🍅 Harvest: Aug 31 – Oct 19

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 Aroostook County

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

Soil pH

Your soil pH (4.9–6.3) is more acidic than Melon prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

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

Organic Matter

Organic matter is moderate (3.8%). Annual compost additions will help Melon.

How to Plant Melon

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

Succession Planting Melon

2
successive plantings in your 129-day season

Sow every 8 weeks. Last sowing by Jun 16 to harvest before frost.

Melon Water Budget

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

Monthly Watering Guide for Melon

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

Month Melon Needs Rainfall You Supplement Action
Jan 2.8" 0" ❄️ Dormant
Feb 2.7" 0" ❄️ Dormant
Mar 3.3" 0" ❄️ Dormant
Apr 3.5" 0" ❄️ Dormant
May 4.3" 3.3" 1" 💧 Light watering
Jun 4.3" 3.7" 0.6" 💧 Light watering
Jul 4.3" 3.6" 0.7" 💧 Light watering
Aug 4.3" 3.6" 0.7" 💧 Light watering
Sep 4.3" 3.9" 0.4" 💧 Light watering
Oct 3.2" 0" ❄️ Dormant
Nov 2.9" 0" ❄️ Dormant
Dec 3" 0" ❄️ Dormant

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

Melon 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.

Melon needs ~722 GDD — county provides 1,096 GDD Excellent fit

Melon Planting Timeline — Aroostook County, ME

Melon Planting Calendar

Activity When Date Range
Start Indoors April 6 Apr 6 – Apr 20
Transplant Outdoors June 8 Jun 8 – Jun 22
Direct Sow June 1 Jun 1 – Jun 22
Harvest August 17 Aug 17 – Oct 5

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Natural rainfall sufficient

📅 Days to Maturity

70–100 days

🧪 Soil pH

Needs 6–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 4a

📆 Growing Season

129 days in Aroostook County

Growing Tips for Melon in Aroostook County

Direct sow Melon outdoors after May 18 in Aroostook County when soil has warmed and frost danger has passed.

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

General growing tips

Start seeds indoors 3-4 weeks before transplanting. Plant on raised mounds of compost-enriched soil. Reduce watering as fruits ripen to concentrate sweetness.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes
  • Cucumber

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Melon in Aroostook County, ME?

Aroostook County is in Zone 4a with an average last frost of May 18. Plan your Melon planting based on this frost date — see the calendar above for exact timing.

What planting zone is Aroostook County, ME?

Aroostook County, Maine is in USDA Hardiness Zone 4a. The average last spring frost is May 18 and first fall frost is September 24.

When should I plant Melon in Aroostook County, ?

In Aroostook County, , plant Melon after the last frost (around May 18) and before the first frost (around September 24). Best results when soil holds above 50°F.

What growing zone is Aroostook County, for Melon?

Aroostook County sits in USDA Zone 4a. Melon grows reliably in zones 4a through 11b, so it's a good fit here.

Can Melon grow in Aroostook County's climate?

Yes — Melon grows well in Aroostook County's temperate climate. Aroostook County averages a 129-day frost-free season, with last frost around May 18 and first frost around September 24.

🌱

Your Aroostook County Garden Planner — Free

A 22-page printable planner built for Aroostook County (Zone 4a). 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 Aroostook 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.