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When to Plant Chard in Susquehanna County, PA

Susquehanna County, Pennsylvania Zone 6a May

May in Susquehanna County, Pennsylvania — your action list

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

Avg. last frost May 1
Avg. first frost October 16
Soil temp (4") 57°F
Watering Low
Pest pressure Low
Daylight 14.4 hrs
  1. Time to transplant chard

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

Looking ahead to June
  • Starting indoors: chard
  • First harvests: 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.

Susquehanna County, Pennsylvania is in USDA Zone 6a. The average last spring frost is May 1 and the first fall frost is October 16, giving you a growing season of approximately 168 days.

At an elevation of 1,094 feet, Susquehanna County receives approximately 49.4 inches of rainfall annually with predominantly silt loam soil. Summer highs average 85°F, providing good warmth for Chard during the growing season.

Susquehanna County, PA (Zone 6a) Moderate season
168 days
Last Spring Frost May 1
168 growing days
First Fall Frost October 16

Susquehanna County Soil Profile

Soil Type

Silt Loam

Soil pH

4.8-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (59 days to spare)
Start indoors: Mar 23 Transplant: Apr 27 🍅 Harvest: Jun 22 – Aug 10
Recommended (50%) ✓ Fits season (63 days to spare)
Start indoors: Mar 27 Transplant: May 1 🍅 Harvest: Jun 26 – Aug 14
Safe Start (90%) ✓ Fits season (63 days to spare)
Start indoors: Apr 12 Transplant: May 17 🍅 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 Susquehanna County

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

Soil pH

Your soil pH (4.8–6.5) is more acidic than Chard prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

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

Organic Matter

Organic matter is moderate (3.8%). Annual compost additions will help Chard.

How to Plant Chard

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

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

Succession Planting Chard

3
successive plantings in your 168-day season

Sow every 5.7 weeks. Last sowing by Aug 17 to harvest before frost.

For a dedicated fall crop, sow by Aug 07.

Plant Water Budget

Plant needs
0.8″/week
Rainfall provides
1.2″/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 3.1" 0" ❄️ Dormant
Feb 3.4" 0" ❄️ Dormant
Mar 4.1" 0" ❄️ Dormant
Apr 3.6" 0" ❄️ Dormant
May 3.5" 4" 0" ✅ Rainfall sufficient
Jun 3.5" 5" 0" ✅ Rainfall sufficient
Jul 3.5" 5.2" 0" ✅ Rainfall sufficient
Aug 3.5" 4.8" 0" ✅ Rainfall sufficient
Sep 3.5" 4.5" 0" ✅ Rainfall sufficient
Oct 3.5" 4.1" 0" ✅ Rainfall sufficient
Nov 4" 0" ❄️ Dormant
Dec 3.7" 0" ❄️ Dormant

Water needs are for active growing months only (May–Oct in Susquehanna 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 ~756 GDD — county provides 2,310 GDD Excellent fit

Chard Planting Timeline — Susquehanna County, PA

Chard Planting Calendar

Activity When Date Range
Start Indoors March 27 Mar 27 – Apr 10
Transplant Outdoors May 1 May 1 – May 15
Direct Sow April 17 Apr 17 – May 8
Harvest June 26 Jun 26 – Aug 14
Fall Sowing August 7 Aug 7 – Aug 21

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

Month-by-Month Timeline

MonthActivities
January
February
March Start Indoors
April Start Indoors Direct Sow
May Transplant Outdoors Direct Sow
June Harvest
July Harvest
August Fall Sowing 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 6a

📆 Growing Season

168 days in Susquehanna County

Growing Tips for Chard in Susquehanna County

Direct sow Chard outdoors after May 01 in Susquehanna 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 Susquehanna County, PA?

Susquehanna County is in Zone 6a with an average last frost of May 1. Plan your Chard planting based on this frost date — see the calendar above for exact timing.

What planting zone is Susquehanna County, PA?

Susquehanna County, Pennsylvania is in USDA Hardiness Zone 6a. The average last spring frost is May 1 and first fall frost is October 16.

🌱

Your Susquehanna County Garden Planner — Free

A 24-page printable planner built for Susquehanna County (Zone 6a). 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 Susquehanna County, PA. 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.