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When to Plant Marjoram in Hancock County, ME

Hancock County, Maine Zone 6a May

Top priorities for Hancock County, Maine gardeners in May

May rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Hancock County, Maine.

Avg. last frost May 6
Avg. first frost October 11
Soil temp (4") 58°F
Watering Low
Pest pressure Low
Daylight 14.6 hrs
  1. Set out marjoram seedlings

    Pinch off the lowest leaves on each seedling before you plant — it reduces water loss while the roots catch up.

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Sweet marjoram is a tender perennial herb with a delicate, sweet oregano-like flavor. It is a cornerstone of Mediterranean cooking and pairs well with meats and vegetables.

Hancock County, Maine is in USDA Zone 6a. The average last spring frost is May 6 and the first fall frost is October 11, giving you a growing season of approximately 158 days.

At an elevation of 654 feet, Hancock County receives approximately 45.1 inches of rainfall annually with predominantly silt loam soil. Summer highs average 87°F, providing good warmth for Marjoram during the growing season.

Hancock County, ME (Zone 6a) Moderate season
158 days
Last Spring Frost May 6
158 growing days
First Fall Frost October 11

Hancock County Soil Profile

Soil Type

Silt Loam

Soil pH

5-6.6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (17 days to spare)
Transplant: May 8 🍅 Harvest: Jul 10 – Sep 18
Recommended (50%) ✓ Fits season (18 days to spare)
Transplant: May 13 🍅 Harvest: Jul 15 – Sep 23
Safe Start (90%) ✓ Fits season (26 days to spare)
Transplant: May 23 🍅 Harvest: Jul 25 – Oct 3

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 Hancock County

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

Soil pH

Your soil pH (5.0–6.6) is more acidic than Marjoram prefers (6.5–7.5). Add garden lime to raise pH.

Soil Texture

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

Organic Matter

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

How to Plant Marjoram

0.5"
Planting Depth
8"
Between Plants
12"
Between Rows

Succession Planting Marjoram

3
successive plantings in your 158-day season

Sow every 6.9 weeks. Last sowing by Jul 13 to harvest before frost.

Plant Water Budget

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

Monthly Watering Guide for Marjoram

Marjoram needs approximately 0.3 inches of water per week (1.3" per month). Here's how your county's rainfall compares month by month.

Month Marjoram Needs Rainfall You Supplement Action
Jan 3.4" 0" ❄️ Dormant
Feb 2.9" 0" ❄️ Dormant
Mar 3.3" 0" ❄️ Dormant
Apr 4.1" 0" ❄️ Dormant
May 1.3" 4.2" 0" ✅ Rainfall sufficient
Jun 1.3" 4" 0" ✅ Rainfall sufficient
Jul 1.3" 4.6" 0" ✅ Rainfall sufficient
Aug 1.3" 4.2" 0" ✅ Rainfall sufficient
Sep 1.3" 4.4" 0" ✅ Rainfall sufficient
Oct 1.3" 3.5" 0" ✅ Rainfall sufficient
Nov 3.3" 0" ❄️ Dormant
Dec 3.2" 0" ❄️ Dormant

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

Marjoram 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.

Marjoram needs ~1,144 GDD — county provides 2,409 GDD Excellent fit

Marjoram Planting Timeline — Hancock County, ME

Marjoram Planting Calendar

Activity When Date Range
Transplant Outdoors May 13 May 13 – May 27
Harvest July 15 Jul 15 – Sep 23

Plant 0.5" deep · 8" apart · Rows 12" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.3"/week · Natural rainfall sufficient

📅 Days to Maturity

60–90 days

🧪 Soil pH

Needs 6.5–7.5 · Your soil: too_acidic

🗺️ USDA Zone

Zone 6a

📆 Growing Season

158 days in Hancock County

Growing Tips for Marjoram in Hancock County

Direct sow Marjoram outdoors after May 06 in Hancock County when soil has warmed and frost danger has passed.

General growing tips

Start seeds indoors 6-8 weeks before last frost. Harvest stems just as flower buds appear for peak flavor. In cold climates, grow as an annual or bring containers indoors.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Marjoram in Hancock County, ME?

Hancock County is in Zone 6a with an average last frost of May 6. Plan your Marjoram planting based on this frost date — see the calendar above for exact timing.

What planting zone is Hancock County, ME?

Hancock County, Maine is in USDA Hardiness Zone 6a. The average last spring frost is May 6 and first fall frost is October 11.

🌱

Your Hancock County Garden Planner — Free

A 24-page printable planner built for Hancock County (Zone 6a). 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 Hancock 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.