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When to Plant Parsley in Lincoln County, ME

Lincoln County, Maine Zone 6a May

May in Lincoln County, Maine — your action list

May is a pivotal month for Lincoln County, Maine gardens. Focus on these tasks first and you'll set up the rest of the season for success.

Avg. last frost May 3
Avg. first frost October 9
Soil temp (4") 58°F
Watering Low
Pest pressure Low
Daylight 14.6 hrs
Coming up in June — start thinking about
  • Starting indoors: parsley
  • First harvests: parsley

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Parsley is a biennial herb available in flat-leaf (Italian) and curly varieties. It is a nutritional powerhouse rich in vitamins C and K and adds fresh flavor to countless dishes.

Lincoln County, Maine is in USDA Zone 6a. The average last spring frost is May 3 and the first fall frost is October 9, giving you a growing season of approximately 159 days.

At an elevation of 815 feet, Lincoln County receives approximately 50 inches of rainfall annually with predominantly silt loam soil. Summer highs average 87°F, providing good warmth for Parsley during the growing season.

Lincoln County, ME (Zone 6a) Moderate season
159 days
Last Spring Frost May 3
159 growing days
First Fall Frost October 9
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Lincoln County Soil Profile

Soil Type

Silt Loam

Soil pH

5-6.4

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (40 days to spare)
Start indoors: Mar 25 Transplant: Apr 22 🍅 Harvest: Jun 24 – Aug 26
Recommended (50%) ✓ Fits season (40 days to spare)
Start indoors: Mar 29 Transplant: Apr 26 🍅 Harvest: Jun 28 – Aug 30
Safe Start (90%) ✓ Fits season (43 days to spare)
Start indoors: Apr 11 Transplant: May 9 🍅 Harvest: Jul 11 – Sep 12

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 Lincoln County

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

Soil pH

Your soil pH (5.0–6.4) is more acidic than Parsley prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

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

Drainage

Drainage is adequate for Parsley.

Organic Matter

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

How to Plant Parsley

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

Fall planting: Sow 10 weeks before your first frost date for a fall harvest.

Succession Planting Parsley

3
successive plantings in your 159-day season

Sow every 6.9 weeks. Last sowing by Jul 21 to harvest before frost.

For a dedicated fall crop, sow by Jul 31.

Plant Water Budget

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

Monthly Watering Guide for Parsley

Parsley needs approximately 0.6 inches of water per week (2.6" per month). Here's how your county's rainfall compares month by month.

Month Parsley Needs Rainfall You Supplement Action
Jan 3.6" 0" ❄️ Dormant
Feb 3.1" 0" ❄️ Dormant
Mar 4.6" 0" ❄️ Dormant
Apr 4.8" 0" ❄️ Dormant
May 2.6" 4.6" 0" ✅ Rainfall sufficient
Jun 2.6" 4.6" 0" ✅ Rainfall sufficient
Jul 2.6" 5.4" 0" ✅ Rainfall sufficient
Aug 2.6" 4.2" 0" ✅ Rainfall sufficient
Sep 2.6" 4.1" 0" ✅ Rainfall sufficient
Oct 2.6" 3.9" 0" ✅ Rainfall sufficient
Nov 3.4" 0" ❄️ Dormant
Dec 3.8" 0" ❄️ Dormant

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

Parsley 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.

Parsley needs ~1,068 GDD — county provides 2,424 GDD Excellent fit

Parsley Planting Timeline — Lincoln County, ME

Parsley Planting Calendar

Activity When Date Range
Start Indoors March 29 Mar 29 – Apr 12
Transplant Outdoors April 26 Apr 26 – May 10
Direct Sow April 19 Apr 19 – May 10
Harvest June 28 Jun 28 – Aug 30
Fall Sowing July 31 Jul 31 – Aug 14

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

Month-by-Month Timeline

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

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

0.6"/week · Natural rainfall sufficient

📅 Days to Maturity

60–80 days

🧪 Soil pH

Needs 6–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 6a

📆 Growing Season

159 days in Lincoln County

Growing Tips for Parsley in Lincoln County

Direct sow Parsley outdoors after May 03 in Lincoln County when soil has warmed and frost danger has passed.

Common pests for Parsley in this region include carrot rust fly and parsleyworm. Use row covers early in the season and inspect plants weekly.

General growing tips

Start seeds indoors 6-8 weeks before last frost. Soak seeds overnight as germination is slow. Harvest outer stems first to keep plants productive. Parsley attracts swallowtail butterflies.

Companion Planting

Good Companions

Avoid Planting Near

  • Mint
  • Lettuce

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Parsley in Lincoln County, ME?

Lincoln County is in Zone 6a with an average last frost of May 3. Plan your Parsley planting based on this frost date — see the calendar above for exact timing.

What planting zone is Lincoln County, ME?

Lincoln County, Maine is in USDA Hardiness Zone 6a. The average last spring frost is May 3 and first fall frost is October 9.

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Your Lincoln County Garden Planner — Free

A 24-page printable planner built for Lincoln 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 Lincoln 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.