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When to Plant Shallot in Southampton County, VA

Southampton County, Virginia Zone 7b May

May in the garden — Southampton County, Virginia

A quick May briefing for Southampton County, Virginia gardeners — what's urgent, what's next, and what can wait.

Avg. last frost March 26
Avg. first frost November 10
Soil temp (4") 68°F
Watering Low
Pest pressure Moderate
Daylight 14 hrs
Before June arrives, get these ready
  • First harvests: shallot

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Shallots are a gourmet allium prized for their complex, sweet, and mild flavor. Each bulb multiplies into a cluster, making them easy and rewarding to grow.

Southampton County, Virginia is in USDA Zone 7b. The average last spring frost is March 26 and the first fall frost is November 10, giving you a growing season of approximately 229 days.

At an elevation of 809 feet, Southampton County receives approximately 51 inches of rainfall annually with predominantly silt loam soil. Summer highs average 93°F, providing good warmth for Shallot during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Shallot root diseases.

Southampton County, VA (Zone 7b) Long season
229 days
Last Spring Frost March 26
229 growing days
First Fall Frost November 10

Southampton County Soil Profile

Soil Type

Silt Loam

Soil pH

5.4-7.1

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (90 days to spare)
Start indoors: Feb 12 Transplant: Mar 19 🍅 Harvest: Jun 18 – Aug 6
Recommended (50%) ✓ Fits season (89 days to spare)
Start indoors: Feb 19 Transplant: Mar 26 🍅 Harvest: Jun 25 – Aug 13
Safe Start (90%) ✓ Fits season (89 days to spare)
Start indoors: Mar 6 Transplant: Apr 10 🍅 Harvest: Jul 10 – Aug 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 Southampton County

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

Soil pH

Your soil pH (5.4–7.1) overlaps with Shallot's range (6.0–7.0), though not a perfect match.

Soil Texture

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

Drainage

Drainage is adequate for Shallot.

Organic Matter

Organic matter is moderate (2.7%). Annual compost additions will help Shallot.

How to Plant Shallot

1"
Planting Depth
6"
Between Plants
12"
Between Rows

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

Plant Water Budget

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

Monthly Watering Guide for Shallot

Shallot needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Shallot Needs Rainfall You Supplement Action
Jan 4.1" 0" ❄️ Dormant
Feb 4.3" 0" ❄️ Dormant
Mar 4.3" 5.1" 0" ✅ Rainfall sufficient
Apr 4.3" 4.3" 0" ✅ Rainfall sufficient
May 4.3" 4.2" 0.1" 💧 Light watering
Jun 4.3" 4.1" 0.2" 💧 Light watering
Jul 4.3" 4.6" 0" ✅ Rainfall sufficient
Aug 4.3" 4.7" 0" ✅ Rainfall sufficient
Sep 4.3" 4.2" 0.1" 💧 Light watering
Oct 4.3" 3.6" 0.7" 💧 Light watering
Nov 4.3" 3.8" 0.5" 💧 Light watering
Dec 4" 0" ❄️ Dormant

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

Shallot 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.

Shallot needs ~2,074 GDD — county provides 4,522 GDD Excellent fit

Shallot Planting Timeline — Southampton County, VA

Shallot Planting Calendar

Activity When Date Range
Start Indoors February 19 Feb 19 – Mar 5
Transplant Outdoors March 26 Mar 26 – Apr 9
Direct Sow March 12 Mar 12 – Apr 2
Harvest June 25 Jun 25 – Aug 13
Fall Sowing September 1 Sep 1 – Sep 15

Plant 1" deep · 6" 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
June Harvest
July Harvest
August Harvest
September Fall Sowing
October
November
December

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Natural rainfall sufficient

📅 Days to Maturity

90–120 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 7b

📆 Growing Season

229 days in Southampton County

Growing Tips for Shallot in Southampton County

Direct sow Shallot outdoors after March 26 in Southampton County when soil has warmed and frost danger has passed.

Common pests for Shallot in this region include onion maggots and thrips. Use row covers early in the season and inspect plants weekly.

General growing tips

Plant sets in fall for spring harvest or early spring for summer harvest. Mulch heavily if overwintering. Harvest when tops brown and dry, then cure for storage.

Companion Planting

Good Companions

Avoid Planting Near

  • Peas
  • Green Beans

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Shallot in Southampton County, VA?

Southampton County is in Zone 7b with an average last frost of March 26. Plan your Shallot planting based on this frost date — see the calendar above for exact timing.

What planting zone is Southampton County, VA?

Southampton County, Virginia is in USDA Hardiness Zone 7b. The average last spring frost is March 26 and first fall frost is November 10.

🌱

Your Southampton County Garden Planner — Free

A 24-page printable planner built for Southampton 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 Southampton County, 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.