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When to Plant Green Beans in Portsmouth City, VA

Portsmouth City, Virginia Zone 8b May

This month in Portsmouth City, Virginia

May is a pivotal month for Portsmouth City, Virginia gardens. Focus on these tasks first and you'll set up the rest of the season for success.

Avg. last frost March 22
Avg. first frost November 17
Soil temp (4") 71°F
Watering Moderate
Pest pressure High
Daylight 14 hrs
  1. Collect green beans at their peak

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

June will be here before you know it — start on
  • 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.

Portsmouth City, Virginia is in USDA Zone 8b. The average last spring frost is March 22 and the first fall frost is November 17, giving you a growing season of approximately 240 days.

At an elevation of 594 feet, Portsmouth City receives approximately 41.7 inches of rainfall annually with predominantly silt loam soil. Summer highs average 93°F, providing good warmth for Green Beans during the growing season.

Portsmouth City, VA (Zone 8b) Long season
240 days
Last Spring Frost March 22
240 growing days
First Fall Frost November 17

Portsmouth City Soil Profile

Soil Type

Silt Loam

Soil pH

5.4-7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (126 days to spare)
Transplant: Mar 16 🍅 Harvest: May 11 – Jul 6
Recommended (50%) ✓ Fits season (128 days to spare)
Transplant: Mar 22 🍅 Harvest: May 17 – Jul 12
Safe Start (90%) ✓ Fits season (112 days to spare)
Transplant: Apr 23 🍅 Harvest: Jun 18 – Aug 13

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 Portsmouth City

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

Soil pH

Your soil pH (5.4–7.0) overlaps with Green Beans's range (6.0–7.0), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (2.6%). 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

5
successive plantings in your 240-day season

Sow every 5.7 weeks. Last sowing by Sep 13 to harvest before frost.

Plant Water Budget

Plant needs
0.9″/week
Rainfall provides
0.7″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 364 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 3.4" 0" ❄️ Dormant
Feb 3" 0" ❄️ Dormant
Mar 3.9" 4.4" 0" ✅ Rainfall sufficient
Apr 3.9" 2.8" 1.1" 💧 Light watering
May 3.9" 3" 0.9" 💧 Light watering
Jun 3.9" 4" 0" ✅ Rainfall sufficient
Jul 3.9" 4" 0" ✅ Rainfall sufficient
Aug 3.9" 4.4" 0" ✅ Rainfall sufficient
Sep 3.9" 3" 0.9" 💧 Light watering
Oct 3.9" 2.9" 1" 💧 Light watering
Nov 3.9" 3" 0.9" 💧 Light watering
Dec 3.8" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Portsmouth City). 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 ~1,136 GDD — county provides 4,740 GDD Excellent fit

Green Beans Planting Timeline — Portsmouth City, VA

Green Beans Planting Calendar

Activity When Date Range
Direct Sow March 29 Mar 29 – Apr 19
Harvest May 24 May 24 – Jul 19

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.9"/week · Only during dry spells

📅 Days to Maturity

50–65 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 8b

📆 Growing Season

240 days in Portsmouth City

Growing Tips for Green Beans in Portsmouth City

Direct sow Green Beans outdoors after March 22 in Portsmouth City 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 Portsmouth City, VA?

Portsmouth City is in Zone 8b with an average last frost of March 22. Plan your Green Beans planting based on this frost date — see the calendar above for exact timing.

What planting zone is Portsmouth City, VA?

Portsmouth City, Virginia is in USDA Hardiness Zone 8b. The average last spring frost is March 22 and first fall frost is November 17.

🌱

Your Portsmouth City Garden Planner — Free

A 24-page printable planner built for Portsmouth City (Zone 8b). 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 Portsmouth City, VA. 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.