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When to Plant Zucchini in Bergen County, NJ

Bergen County, New Jersey Zone 7b May

This month in Bergen County, New Jersey

Your Bergen 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 29
Avg. first frost November 12
Soil temp (4") 63°F
Watering Low
Pest pressure Low
Daylight 14.3 hrs
  1. Collect zucchini at their peak

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

Looking ahead to June
  • First harvests: zucchini

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Zucchini is an incredibly prolific summer squash that can produce an abundance of fruit from just a few plants. It is versatile in the kitchen from grilling to baking.

Bergen County, New Jersey is in USDA Zone 7b. The average last spring frost is March 29 and the first fall frost is November 12, giving you a growing season of approximately 228 days.

At an elevation of 350 feet, Bergen County receives approximately 47.7 inches of rainfall annually with predominantly silt loam soil. Summer highs average 89°F, providing good warmth for Zucchini during the growing season.

Bergen County, NJ (Zone 7b) Long season
228 days
Last Spring Frost March 29
228 growing days
First Fall Frost November 12

Bergen County Soil Profile

Soil Type

Silt Loam

Soil pH

5.2-6.4

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (109 days to spare)
Start indoors: Feb 25 Transplant: Apr 8 🍅 Harvest: May 27 – Jul 22
Recommended (50%) ✓ Fits season (109 days to spare)
Start indoors: Mar 1 Transplant: Apr 12 🍅 Harvest: May 31 – Jul 26
Safe Start (90%) ✓ Fits season (118 days to spare)
Start indoors: Mar 12 Transplant: Apr 23 🍅 Harvest: Jun 11 – Aug 6

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 Bergen County

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

Soil pH

Your soil pH (5.2–6.4) is more acidic than Zucchini prefers (6.0–7.5). Add garden lime to raise pH.

Soil Texture

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

Organic Matter

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

How to Plant Zucchini

1"
Planting Depth
30"
Between Plants
42"
Between Rows

Succession Planting Zucchini

6
successive plantings in your 228-day season

Sow every 5.1 weeks. Last sowing by Sep 13 to harvest before frost.

Plant Water Budget

Plant needs
1.2″/week
Rainfall provides
0.9″/week
You supply
0.3″/week
Watering frequency 1-2 times/week
Season total 652 gal / 100 sq ft

Monthly Watering Guide for Zucchini

Zucchini needs approximately 1.2 inches of water per week (5.2" per month). Here's how your county's rainfall compares month by month.

Month Zucchini Needs Rainfall You Supplement Action
Jan 3.8" 0" ❄️ Dormant
Feb 2.8" 0" ❄️ Dormant
Mar 5.2" 3.7" 1.5" 💧 Light watering
Apr 5.2" 4" 1.2" 💧 Light watering
May 5.2" 4.4" 0.8" 💧 Light watering
Jun 5.2" 4.9" 0.3" 💧 Light watering
Jul 5.2" 5.3" 0" ✅ Rainfall sufficient
Aug 5.2" 4.5" 0.7" 💧 Light watering
Sep 5.2" 4.3" 0.9" 💧 Light watering
Oct 5.2" 3.4" 1.8" 💧 Light watering
Nov 5.2" 3.4" 1.8" 💧 Light watering
Dec 3.1" 0" ❄️ Dormant

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

Zucchini 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.

Zucchini needs ~879 GDD — county provides 3,819 GDD Excellent fit

Zucchini Planting Timeline — Bergen County, NJ

Zucchini Planting Calendar

Activity When Date Range
Start Indoors March 1 Mar 1 – Mar 15
Transplant Outdoors April 12 Apr 12 – Apr 26
Direct Sow April 5 Apr 5 – Apr 26
Harvest May 31 May 31 – Jul 26

Plant 1" deep · 30" apart · Rows 42" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.2"/week · 1-2 times/week

📅 Days to Maturity

45–60 days

🧪 Soil pH

Needs 6–7.5 · Your soil: too_acidic

🗺️ USDA Zone

Zone 7b

📆 Growing Season

228 days in Bergen County

Growing Tips for Zucchini in Bergen County

Direct sow Zucchini outdoors after March 29 in Bergen County when soil has warmed and frost danger has passed.

Your generous 228.0-day season in Bergen County allows multiple plantings of Zucchini. Sow every 22.0 days for continuous harvest.

Common pests for Zucchini in this region include squash vine borer and cucumber beetles. Use row covers early in the season and inspect plants weekly.

General growing tips

Direct sow after last frost. Harvest when fruits are 6-8 inches long for best flavor and texture. Check plants daily in summer as fruits can double in size overnight.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Zucchini in Bergen County, NJ?

Bergen County is in Zone 7b with an average last frost of March 29. Plan your Zucchini planting based on this frost date — see the calendar above for exact timing.

What planting zone is Bergen County, NJ?

Bergen County, New Jersey is in USDA Hardiness Zone 7b. The average last spring frost is March 29 and first fall frost is November 12.

🌱

Your Bergen County Garden Planner — Free

A 24-page printable planner built for Bergen 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 Bergen 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.