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When to Plant Shallot in Northampton County, VA

Northampton County, Virginia Zone 8a May

May in Northampton County, Virginia — your action list

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

Avg. last frost March 19
Avg. first frost November 18
Soil temp (4") 70°F
Watering Low
Pest pressure Moderate
Daylight 14 hrs
Coming up in June — start thinking about
  • 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.

Northampton County, Virginia is in USDA Zone 8a. The average last spring frost is March 19 and the first fall frost is November 18, giving you a growing season of approximately 244 days.

At an elevation of 971 feet, Northampton County receives approximately 54.5 inches of rainfall annually with predominantly silt loam soil. Summer highs average 89°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.

Northampton County, VA (Zone 8a) Long season
244 days
Last Spring Frost March 19
244 growing days
First Fall Frost November 18
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Northampton County Soil Profile

Soil Type

Silt Loam

Soil pH

5.7-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (103 days to spare)
Start indoors: Feb 6 Transplant: Mar 13 🍅 Harvest: Jun 12 – Jul 31
Recommended (50%) ✓ Fits season (104 days to spare)
Start indoors: Feb 12 Transplant: Mar 19 🍅 Harvest: Jun 18 – Aug 6
Safe Start (90%) ✓ Fits season (96 days to spare)
Start indoors: Mar 8 Transplant: Apr 12 🍅 Harvest: Jul 12 – Aug 30

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 Northampton County

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

Soil pH

Your soil pH (5.7–6.5) overlaps with Shallot's range (6.0–7.0), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (3.3%). 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
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 134 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 4.8" 0" ❄️ Dormant
Feb 4.8" 0" ❄️ Dormant
Mar 4.3" 5.2" 0" ✅ Rainfall sufficient
Apr 4.3" 3.8" 0.5" 💧 Light watering
May 4.3" 4.8" 0" ✅ Rainfall sufficient
Jun 4.3" 4.4" 0" ✅ Rainfall sufficient
Jul 4.3" 5.1" 0" ✅ Rainfall sufficient
Aug 4.3" 5.8" 0" ✅ Rainfall sufficient
Sep 4.3" 3.8" 0.5" 💧 Light watering
Oct 4.3" 3.4" 0.9" 💧 Light watering
Nov 4.3" 4" 0.3" 💧 Light watering
Dec 4.6" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Northampton 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 ~1,759 GDD — county provides 4,087 GDD Excellent fit

Shallot Planting Timeline — Northampton County, VA

Shallot Planting Calendar

Activity When Date Range
Start Indoors February 12 Feb 12 – Feb 26
Transplant Outdoors March 19 Mar 19 – Apr 2
Direct Sow March 5 Mar 5 – Mar 26
Harvest June 18 Jun 18 – Aug 6
Fall Sowing September 9 Sep 9 – Sep 23

Plant 1" deep · 6" apart · Rows 12" apart

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Only during dry spells

📅 Days to Maturity

90–120 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 8a

📆 Growing Season

244 days in Northampton County

Growing Tips for Shallot in Northampton County

Direct sow Shallot outdoors after March 19 in Northampton 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 Northampton County, VA?

Northampton County is in Zone 8a with an average last frost of March 19. Plan your Shallot planting based on this frost date — see the calendar above for exact timing.

What planting zone is Northampton County, VA?

Northampton County, Virginia is in USDA Hardiness Zone 8a. The average last spring frost is March 19 and first fall frost is November 18.

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Your Northampton County Garden Planner — Free

A 24-page printable planner built for Northampton County (Zone 8a). 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 Northampton 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.