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When to Plant Dill in Cumberland County, NJ

Cumberland County, New Jersey Zone 7b May

Your May planting checklist for Cumberland County, New Jersey

Your Cumberland County, New Jersey garden is entering a new phase. Here's what's on the schedule for May and why each task matters now.

Avg. last frost March 28
Avg. first frost November 12
Soil temp (4") 70°F
Watering Low
Pest pressure Moderate
Daylight 14.2 hrs
  1. Begin indoor sowing: dill

    These need a head start before your last frost (March 28). Sow into cells now so you're ready to transplant in a few weeks.

  2. Pick dill

    This is the payoff month. Bring a basket, bring a friend, and get into the beds.

Looking ahead to June
  • First harvests: dill

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Dill is a feathery annual herb with aromatic leaves and seeds. Its fine foliage and umbrella-shaped flower heads attract beneficial insects to the garden.

Cumberland County, New Jersey is in USDA Zone 7b. The average last spring frost is March 28 and the first fall frost is November 12, giving you a growing season of approximately 229 days.

At an elevation of 425 feet, Cumberland County receives approximately 42 inches of rainfall annually with predominantly silt loam soil. Summer highs average 94°F, providing good warmth for Dill during the growing season.

Cumberland County, NJ (Zone 7b) Long season
229 days
Last Spring Frost March 28
229 growing days
First Fall Frost November 12
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Cumberland 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 (131 days to spare)
Start indoors: Feb 16 Transplant: Mar 16 🍅 Harvest: Apr 27 – Jun 29
Recommended (50%) ✓ Fits season (131 days to spare)
Start indoors: Feb 21 Transplant: Mar 21 🍅 Harvest: May 2 – Jul 4
Safe Start (90%) ✓ Fits season (140 days to spare)
Start indoors: Mar 5 Transplant: Apr 2 🍅 Harvest: May 14 – Jul 16

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 Cumberland County

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

Soil pH

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

Soil Texture

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

Organic Matter

Organic matter is moderate (3.7%). Annual compost additions will help Dill.

How to Plant Dill

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 Dill

6
successive plantings in your 229-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
0.5″/week
Rainfall provides
0.8″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

Monthly Watering Guide for Dill

Dill needs approximately 0.5 inches of water per week (2.2" per month). Here's how your county's rainfall compares month by month.

Month Dill Needs Rainfall You Supplement Action
Jan 3.4" 0" ❄️ Dormant
Feb 2.8" 0" ❄️ Dormant
Mar 2.2" 3.5" 0" ✅ Rainfall sufficient
Apr 2.2" 3.4" 0" ✅ Rainfall sufficient
May 2.2" 4.4" 0" ✅ Rainfall sufficient
Jun 2.2" 3.8" 0" ✅ Rainfall sufficient
Jul 2.2" 4.1" 0" ✅ Rainfall sufficient
Aug 2.2" 3.9" 0" ✅ Rainfall sufficient
Sep 2.2" 3.3" 0" ✅ Rainfall sufficient
Oct 2.2" 3.6" 0" ✅ Rainfall sufficient
Nov 2.2" 3.1" 0" ✅ Rainfall sufficient
Dec 2.9" 0" ❄️ Dormant

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

Dill 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.

Dill needs ~1,025 GDD — county provides 4,694 GDD Excellent fit

Dill Planting Timeline — Cumberland County, NJ

Dill Planting Calendar

Activity When Date Range
Start Indoors February 21 Feb 21 – Mar 7
Transplant Outdoors March 21 Mar 21 – Apr 4
Direct Sow March 14 Mar 14 – Apr 4
Harvest May 2 May 2 – Jul 4
Fall Sowing September 3 Sep 3 – Sep 17

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

Month-by-Month Timeline

MonthActivities
January
February Start Indoors
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
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Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.5"/week · Natural rainfall sufficient

📅 Days to Maturity

40–60 days

🧪 Soil pH

Needs 5.5–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 7b

📆 Growing Season

229 days in Cumberland County

Growing Tips for Dill in Cumberland County

Direct sow Dill outdoors after March 28 in Cumberland County when soil has warmed and frost danger has passed.

Your generous 229.0-day season in Cumberland County allows multiple plantings of Dill. Sow every 20.0 days for continuous harvest.

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

General growing tips

Direct sow in spring as dill has a taproot and dislikes transplanting. Succession sow for continuous leaf harvest. Allow some plants to flower for seeds and to attract beneficial insects.

Companion Planting

Good Companions

Avoid Planting Near

  • Carrots
  • Tomatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Dill in Cumberland County, NJ?

Cumberland County is in Zone 7b with an average last frost of March 28. Plan your Dill planting based on this frost date — see the calendar above for exact timing.

What planting zone is Cumberland County, NJ?

Cumberland County, New Jersey is in USDA Hardiness Zone 7b. The average last spring frost is March 28 and first fall frost is November 12.

🌱

Your Cumberland County Garden Planner — Free

A 24-page printable planner built for Cumberland 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 Cumberland 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.