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When to Plant Sorrel in Gloucester County, NJ

Gloucester County, New Jersey Zone 7b May

Gloucester County, New Jersey gardeners: here's your May plan

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

Avg. last frost April 5
Avg. first frost November 12
Soil temp (4") 69°F
Watering Low
Pest pressure Moderate
Daylight 14.2 hrs
  1. Get sorrel seeds going inside

    Your window is short. These crops want several weeks of indoor growth before they go outside.

  2. It's harvest week for sorrel

    Taste as you pick. The first ripe produce is the best feedback loop you'll get all season.

Get ahead of June
  • First harvests: sorrel

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Sorrel is a perennial herb with tangy, lemon-flavored arrow-shaped leaves. It is one of the first greens to emerge in spring and is used in soups and salads.

Gloucester County, New Jersey is in USDA Zone 7b. The average last spring frost is April 5 and the first fall frost is November 12, giving you a growing season of approximately 221 days.

At an elevation of 735 feet, Gloucester County receives approximately 49.9 inches of rainfall annually with predominantly silt loam soil. Summer highs average 94°F, providing good warmth for Sorrel during the growing season.

Gloucester County, NJ (Zone 7b) Long season
221 days
Last Spring Frost April 5
221 growing days
First Fall Frost November 12

Gloucester County Soil Profile

Soil Type

Silt Loam

Soil pH

5.2-6.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (124 days to spare)
Start indoors: Feb 17 Transplant: Mar 17 🍅 Harvest: Apr 28 – Jun 30
Recommended (50%) ✓ Fits season (123 days to spare)
Start indoors: Mar 1 Transplant: Mar 29 🍅 Harvest: May 10 – Jul 12
Safe Start (90%) ✓ Fits season (123 days to spare)
Start indoors: Mar 24 Transplant: Apr 21 🍅 Harvest: Jun 2 – Aug 4

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 Gloucester County

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

Soil pH

Your soil pH (5.2–6.8) overlaps with Sorrel's range (5.5–7.0), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (3.5%). Annual compost additions will help Sorrel.

How to Plant Sorrel

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 Sorrel

6
successive plantings in your 221-day season

Sow every 4.6 weeks. Last sowing by Sep 13 to harvest before frost.

For a dedicated fall crop, sow by Sep 03.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
1.0″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 102 gal / 100 sq ft

Monthly Watering Guide for Sorrel

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

Month Sorrel Needs Rainfall You Supplement Action
Jan 3.7" 0" ❄️ Dormant
Feb 3" 0" ❄️ Dormant
Mar 4.5" 0" ❄️ Dormant
Apr 4.3" 4" 0.3" 💧 Light watering
May 4.3" 4.8" 0" ✅ Rainfall sufficient
Jun 4.3" 4.3" 0" ✅ Rainfall sufficient
Jul 4.3" 5.3" 0" ✅ Rainfall sufficient
Aug 4.3" 4" 0.3" 💧 Light watering
Sep 4.3" 4.3" 0" ✅ Rainfall sufficient
Oct 4.3" 3.9" 0.4" 💧 Light watering
Nov 4.3" 4.1" 0.2" 💧 Light watering
Dec 3.8" 0" ❄️ Dormant

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

Sorrel 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.

Sorrel needs ~1,025 GDD — county provides 4,530 GDD Excellent fit

Sorrel Planting Timeline — Gloucester County, NJ

Sorrel Planting Calendar

Activity When Date Range
Start Indoors March 1 Mar 1 – Mar 15
Transplant Outdoors March 29 Mar 29 – Apr 12
Direct Sow March 22 Mar 22 – Apr 12
Harvest May 10 May 10 – Jul 12
Fall Sowing September 3 Sep 3 – Sep 17

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

1"/week · Only during dry spells

📅 Days to Maturity

40–60 days

🧪 Soil pH

Needs 5.5–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 7b

📆 Growing Season

221 days in Gloucester County

Growing Tips for Sorrel in Gloucester County

Direct sow Sorrel outdoors after April 05 in Gloucester County when soil has warmed and frost danger has passed.

Your generous 221.0-day season in Gloucester County allows multiple plantings of Sorrel. Sow every 20.0 days for continuous harvest.

General growing tips

Direct sow in early spring or fall. Remove flower stalks promptly to encourage leaf production. Divide clumps every 3-4 years. Young leaves have the best flavor.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Sorrel in Gloucester County, NJ?

Gloucester County is in Zone 7b with an average last frost of April 5. Plan your Sorrel planting based on this frost date — see the calendar above for exact timing.

What planting zone is Gloucester County, NJ?

Gloucester County, New Jersey is in USDA Hardiness Zone 7b. The average last spring frost is April 5 and first fall frost is November 12.

🌱

Your Gloucester County Garden Planner — Free

A 24-page printable planner built for Gloucester County (Zone 7b). 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 Gloucester County, NJ. 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.