Blog

When to Plant Celtuce in Cape May County, NJ

Celtuce (stem lettuce) is a Chinese vegetable grown for its thick, crunchy stem rather than its leaves. The peeled stem has a mild, cucumber-like flavor.

Cape May County, New Jersey is in USDA Zone 7b. The average last spring frost is March 29 and the first fall frost is November 11, giving you a growing season of approximately 227 days.

At an elevation of 928 feet, Cape May County receives approximately 44.7 inches of rainfall annually with predominantly silt loam soil. Summer highs average 94ยฐF, providing good warmth for Celtuce during the growing season.

Cape May County, NJ (Zone 7b) Long season
227 days
Last Spring Frost March 29
227 growing days
First Fall Frost November 11

Cape May County Soil Profile

Soil Type

Silt Loam

Soil pH

4.9-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (122 days to spare)
Start indoors: Feb 17 Transplant: Mar 24 🍅 Harvest: May 26 – Jul 7
Recommended (50%) ✓ Fits season (122 days to spare)
Start indoors: Feb 22 Transplant: Mar 29 🍅 Harvest: May 31 – Jul 12
Safe Start (90%) ✓ Fits season (124 days to spare)
Start indoors: Mar 10 Transplant: Apr 14 🍅 Harvest: Jun 16 – Jul 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 Cape May County

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

Soil pH

Your soil pH (4.9โ€“6.5) is more acidic than Celtuce prefers (6.0โ€“7.0). Add garden lime to raise pH.

Soil Texture

The silt loam soil in Cape May County is excellent for Celtuce โ€” good drainage, moisture retention, and nutrient holding capacity.

Drainage

Drainage is adequate for Celtuce.

Organic Matter

Organic matter is moderate (3.1%). Annual compost additions will help Celtuce.

How to Plant Celtuce

0.5"
Planting Depth
6"
Between Plants
12"
Between Rows

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

Succession Planting Celtuce

4
successive plantings in your 227-day season

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

For a dedicated fall crop, sow by Sep 02.

Plant Water Budget

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

Monthly Watering Guide for Celtuce

Celtuce needs approximately 0.7 inches of water per week (3" per month). Here's how your county's rainfall compares month by month.

Month Celtuce Needs Rainfall You Supplement Action
Jan โ€” 2.9" 0" โ„๏ธ Dormant
Feb โ€” 2.9" 0" โ„๏ธ Dormant
Mar 3" 3.5" 0" โœ… Rainfall sufficient
Apr 3" 4.2" 0" โœ… Rainfall sufficient
May 3" 4.2" 0" โœ… Rainfall sufficient
Jun 3" 4.2" 0" โœ… Rainfall sufficient
Jul 3" 3.8" 0" โœ… Rainfall sufficient
Aug 3" 4.5" 0" โœ… Rainfall sufficient
Sep 3" 4.1" 0" โœ… Rainfall sufficient
Oct 3" 3.7" 0" โœ… Rainfall sufficient
Nov 3" 3.2" 0" โœ… Rainfall sufficient
Dec โ€” 3.4" 0" โ„๏ธ Dormant

Water needs are for active growing months only (Marโ€“Nov in Cape May County). Supplement amounts are based on average rainfall โ€” actual needs vary with temperature, soil, and mulching.

Celtuce 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" โ€” every day above 50ยฐF 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.

Celtuce needs ~1,538 GDD — county provides 4,653 GDD Excellent fit

Celtuce Planting Timeline โ€” Cape May County, NJ

Celtuce Planting Calendar

Activity When Date Range
Start Indoors February 22 Feb 22 โ€“ Mar 8
Transplant Outdoors March 29 Mar 29 โ€“ Apr 12
Direct Sow March 15 Mar 15 โ€“ Apr 5
Harvest May 31 May 31 โ€“ Jul 12
Fall Sowing September 2 Sep 2 โ€“ Sep 16

Plant 0.5" deep ยท 6" apart ยท Rows 12" apart

Month-by-Month Timeline

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

Growing Conditions

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

0.7"/week ยท Natural rainfall sufficient

๐Ÿ“… Days to Maturity

60โ€“90 days

๐Ÿงช Soil pH

Needs 6โ€“7 ยท Your soil: too_acidic

๐Ÿ—บ๏ธ USDA Zone

Zone 7b

๐Ÿ“† Growing Season

227 days in Cape May County

Growing Tips for Celtuce in Cape May County

Direct sow Celtuce outdoors after March 29 in Cape May County when soil has warmed and frost danger has passed.

Common pests for Celtuce in this region include aphids and slugs. Use row covers early in the season and inspect plants weekly.

General growing tips

Direct sow in spring or start indoors. Space 12 inches apart. Harvest when stems are about 1 inch in diameter. Peel the tough outer skin to reveal the tender center.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Celtuce in Cape May County, NJ?

Cape May County is in Zone 7b with an average last frost of March 29. Plan your Celtuce planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Cape May County, NJ?

Cape May County, New Jersey is in USDA Hardiness Zone 7b. The average last spring frost is March 29 and first fall frost is November 11.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Cape May County gardeners in Zone 7b organize planting dates, track what's growing, and never miss a planting window.

Get Your Free Garden Planner →

Free download. Plan your entire garden season in minutes.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Cape May County, NJ. Local conditions may vary. Last updated: April 2026.