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When to Plant Chard in Orleans County, VT

Orleans County, Vermont Zone 4b May

May to-do list for Orleans County, Vermont

May rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Orleans County, Vermont.

Avg. last frost May 13
Avg. first frost October 4
Soil temp (4") 55°F
Watering Low
Pest pressure Low
Daylight 14.6 hrs
  1. Set out chard seedlings

    Bring a watering can to the bed. Each transplant gets a drink the moment it's in the ground, not ten minutes later.

  2. Plant chard from seed, right in the garden

    Rake a smooth bed, make a shallow furrow, drop seeds at the spacing on the packet, water gently, walk away.

Looking ahead to June
  • Starting indoors: chard

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Swiss chard is a colorful, heat-tolerant green with large crinkled leaves and vibrant stalks in red, yellow, and white. Both the leaves and stems are edible and nutritious.

Orleans County, Vermont is in USDA Zone 4b. The average last spring frost is May 13 and the first fall frost is October 4, giving you a growing season of approximately 144 days.

At an elevation of 48 feet, Orleans County receives approximately 49.5 inches of rainfall annually with predominantly silt loam soil. Summer highs average 83°F, so choose short-season varieties of Chard to ensure they mature before fall.

Orleans County, VT (Zone 4b) Short season
144 days
Last Spring Frost May 13
144 growing days
First Fall Frost October 4

Orleans County Soil Profile

Soil Type

Silt Loam

Soil pH

5.2-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (39 days to spare)
Start indoors: Mar 27 Transplant: May 8 🍅 Harvest: Jul 3 – Aug 21
Recommended (50%) ✓ Fits season (39 days to spare)
Start indoors: Apr 1 Transplant: May 13 🍅 Harvest: Jul 8 – Aug 26
Safe Start (90%) ✓ Fits season (38 days to spare)
Start indoors: Apr 14 Transplant: May 26 🍅 Harvest: Jul 21 – Sep 8

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 Orleans County

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

Soil pH

Your soil pH (5.2–6.5) is more acidic than Chard prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

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

Organic Matter

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

How to Plant Chard

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

Fall planting: Sow 12 weeks before your first frost date for a fall harvest.

Succession Planting Chard

3
successive plantings in your 144-day season

Sow every 5.7 weeks. Last sowing by Aug 05 to harvest before frost.

For a dedicated fall crop, sow by Jul 12.

Plant Water Budget

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

Monthly Watering Guide for Chard

Chard needs approximately 0.8 inches of water per week (3.5" per month). Here's how your county's rainfall compares month by month.

Month Chard Needs Rainfall You Supplement Action
Jan 4" 0" ❄️ Dormant
Feb 3.1" 0" ❄️ Dormant
Mar 4.4" 0" ❄️ Dormant
Apr 3.9" 0" ❄️ Dormant
May 3.5" 4.7" 0" ✅ Rainfall sufficient
Jun 3.5" 4.2" 0" ✅ Rainfall sufficient
Jul 3.5" 5.4" 0" ✅ Rainfall sufficient
Aug 3.5" 4.3" 0" ✅ Rainfall sufficient
Sep 3.5" 4.7" 0" ✅ Rainfall sufficient
Oct 3.5" 4" 0" ✅ Rainfall sufficient
Nov 3.3" 0" ❄️ Dormant
Dec 3.7" 0" ❄️ Dormant

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

Chard 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.

Chard needs ~674 GDD — county provides 1,764 GDD Excellent fit

Chard Planting Timeline — Orleans County, VT

Chard Planting Calendar

Activity When Date Range
Start Indoors April 1 Apr 1 – Apr 15
Transplant Outdoors May 13 May 13 – May 27
Direct Sow May 6 May 6 – May 27
Harvest July 8 Jul 8 – Aug 26
Fall Sowing July 12 Jul 12 – Jul 26

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

0.8"/week · Natural rainfall sufficient

📅 Days to Maturity

50–60 days

🧪 Soil pH

Needs 6–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 4b

📆 Growing Season

144 days in Orleans County

Growing Tips for Chard in Orleans County

Direct sow Chard outdoors after May 13 in Orleans County when soil has warmed and frost danger has passed.

General growing tips

Direct sow or transplant after last frost. Harvest outer leaves regularly to encourage continuous production. Chard tolerates both heat and light frost.

Companion Planting

Good Companions

Avoid Planting Near

  • Corn
  • Cucumbers

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Chard in Orleans County, VT?

Orleans County is in Zone 4b with an average last frost of May 13. Plan your Chard planting based on this frost date — see the calendar above for exact timing.

What planting zone is Orleans County, VT?

Orleans County, Vermont is in USDA Hardiness Zone 4b. The average last spring frost is May 13 and first fall frost is October 4.

🌱

Your Orleans County Garden Planner — Free

A 24-page printable planner built for Orleans County (Zone 4b). 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 Orleans County, VT. 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.