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When to plant Green Beans in New London County County,

Plant Green Beans in New London County County from April 30 to May 21 in spring. New London County County sits in USDA Zone 7a, with last frost around April 23 and first frost on October 18.

When to Plant Green Beans in New London County, CT

Green Beans
New London County, Connecticut Zone 7a June

What to do in June

A quick June briefing for New London County, Connecticut gardeners — what's urgent, what's next, and what can wait.

Avg. last frost April 23
Avg. first frost October 18
Soil temp (4") 72°F
Watering Low
Pest pressure High
Daylight 15 hrs
  1. Harvest green beans as they ripen

    Check every 1–2 days. Many of these get tough or go to seed if you wait too long.

Before July arrives, get these ready
  • First harvests: green beans

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Green beans are a warm-season staple available as bush or pole types. Bush beans produce a concentrated harvest while pole beans provide a longer picking season.

New London County, Connecticut is in USDA Zone 7a. The average last spring frost is April 23 and the first fall frost is October 18, giving you a growing season of approximately 178 days.

At an elevation of 766 feet, New London County receives approximately 49.1 inches of rainfall annually with predominantly silt loam soil. Summer highs average 87°F, providing good warmth for Green Beans during the growing season.

New London County, CT (Zone 7a) Moderate season
178 days
Last Spring Frost April 23
178 growing days
First Fall Frost October 18

New London County Soil Profile

Soil Type

Silt Loam

Soil pH

5-6.6

Drainage

Well Drained

Green Beans Planting Risk Windows

Early Start (70% safe) ✓ Fits season (69 days to spare)
Transplant: Apr 14 🍅 Harvest: Jun 9 – Aug 4
Recommended (50%) ✓ Fits season (66 days to spare)
Transplant: Apr 23 🍅 Harvest: Jun 18 – Aug 13
Safe Start (90%) ✓ Fits season (59 days to spare)
Transplant: May 15 🍅 Harvest: Jul 10 – Sep 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 New London County

How your county's soil matches Green Beans's growing requirements.

Soil pH

Your soil pH (5.0–6.6) is more acidic than Green Beans prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

The silt loam soil in New London County is excellent for Green Beans — good drainage, moisture retention, and nutrient holding capacity.

Drainage

Drainage is adequate for Green Beans.

Organic Matter

Organic matter is moderate (3.6%). Annual compost additions will help Green Beans.

How to Plant Green Beans

1"
Planting Depth
15"
Between Plants
24"
Between Rows

Succession Planting Green Beans

4
successive plantings in your 178-day season

Sow every 5.7 weeks. Last sowing by Aug 14 to harvest before frost.

Green Beans Water Budget

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

Monthly Watering Guide for Green Beans

Green Beans needs approximately 0.9 inches of water per week (3.9" per month). Here's how your county's rainfall compares month by month.

Month Green Beans Needs Rainfall You Supplement Action
Jan 3.5" 0" ❄️ Dormant
Feb 3.5" 0" ❄️ Dormant
Mar 4" 0" ❄️ Dormant
Apr 3.9" 4.7" 0" ✅ Rainfall sufficient
May 3.9" 4.4" 0" ✅ Rainfall sufficient
Jun 3.9" 4.3" 0" ✅ Rainfall sufficient
Jul 3.9" 5.1" 0" ✅ Rainfall sufficient
Aug 3.9" 3.9" 0" ✅ Rainfall sufficient
Sep 3.9" 4.1" 0" ✅ Rainfall sufficient
Oct 3.9" 4.5" 0" ✅ Rainfall sufficient
Nov 3.9" 0" ❄️ Dormant
Dec 3.4" 0" ❄️ Dormant

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

Green Beans 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.

Green Beans needs ~877 GDD — county provides 2,714 GDD Excellent fit

Green Beans Planting Timeline — New London County, CT

Green Beans Planting Calendar

Activity When Date Range
Direct Sow April 30 Apr 30 – May 21
Harvest June 25 Jun 25 – Aug 20

Plant 1" deep · 15" apart · Rows 24" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.9"/week · Natural rainfall sufficient

📅 Days to Maturity

50–65 days

🧪 Soil pH

Needs 6–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 7a

📆 Growing Season

178 days in New London County

Growing Tips for Green Beans in New London County

Direct sow Green Beans outdoors after April 23 in New London County when soil has warmed and frost danger has passed.

Common pests for Green Beans in this region include bean beetles and aphids. Use row covers early in the season and inspect plants weekly.

General growing tips

Direct sow after last frost when soil is warm. Provide sturdy supports for pole varieties. Pick beans regularly when young and tender to encourage continued production.

Companion Planting

Good Companions

Avoid Planting Near

  • Onion
  • Garlic
  • Fennel

Check more plant combinations with our Companion Planting Checker →

🌾 Save Your Own Green Beans Seeds
Life Cycle Annual
Pollination Self-Pollinating
How to Collect Allow pods to dry fully on vine until they rattle.
Storage Store airtight; viable 4 years at 35°F, under 45% humidity.

Avoid harvesting during damp weather. Isolate 25 ft between varieties.

Frequently Asked Questions

When should I plant Green Beans in New London County, CT?

New London County is in Zone 7a with an average last frost of April 23. Plan your Green Beans planting based on this frost date — see the calendar above for exact timing.

What planting zone is New London County, CT?

New London County, Connecticut is in USDA Hardiness Zone 7a. The average last spring frost is April 23 and first fall frost is October 18.

When should I plant Green Beans in New London County County, ?

In New London County County, , plant Green Beans after the last frost (around April 23) and before the first frost (around October 18). Best results when soil holds above 50°F.

What growing zone is New London County County, for Green Beans?

New London County County sits in USDA Zone 7a. Green Beans grows reliably in zones 3a through 11b, so it's a good fit here.

Can Green Beans grow in New London County County's climate?

Yes — Green Beans grows well in New London County County's temperate climate. New London County County averages a 178-day frost-free season, with last frost around April 23 and first frost around October 18.

🌱

Your New London County Garden Planner — Free

A 22-page printable planner built for New London County (Zone 7a). 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 New London County, CT. Local conditions may vary. Last updated: June 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.