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When to Plant Chard in Juniata County, PA

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.

Juniata County, Pennsylvania is in USDA Zone 6a. The average last spring frost is April 24 and the first fall frost is October 22, giving you a growing season of approximately 181 days.

At an elevation of 659 feet, Juniata County receives approximately 44.9 inches of rainfall annually with predominantly silt loam soil. Summer highs average 86ยฐF, providing good warmth for Chard during the growing season.

Juniata County, PA (Zone 6a) Moderate season
181 days
Last Spring Frost April 24
181 growing days
First Fall Frost October 22

Juniata County Soil Profile

Soil Type

Silt Loam

Soil pH

5-6.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (79 days to spare)
Start indoors: Mar 13 Transplant: Apr 17 🍅 Harvest: Jun 12 – Jul 31
Recommended (50%) ✓ Fits season (76 days to spare)
Start indoors: Mar 20 Transplant: Apr 24 🍅 Harvest: Jun 19 – Aug 7
Safe Start (90%) ✓ Fits season (68 days to spare)
Start indoors: Apr 8 Transplant: May 13 🍅 Harvest: Jul 8 – Aug 26

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.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
1.0″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Chard needs ~798 GDD — county provides 2,624 GDD Excellent fit

Chard Planting Timeline โ€” Juniata County, PA

Chard Planting Calendar

Activity When Date Range
Start Indoors March 20 Mar 20 โ€“ Apr 3
Transplant Outdoors April 24 Apr 24 โ€“ May 8
Direct Sow April 10 Apr 10 โ€“ May 1
Fall Sowing August 13 Aug 13 โ€“ Aug 27
Harvest June 19 Jun 19 โ€“ Aug 7

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

Month-by-Month Timeline

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

Growing Conditions

Sun

Partial Shade (3-6 hours)

Water

Moderate โ€” regular watering

Days to Maturity

50โ€“60 days

Soil pH

6 โ€“ 7

USDA Zone

Zone 6a

Growing Season

181 days

Growing Tips for Juniata County

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

Level Up Your Garden

Frequently Asked Questions

When should I plant Chard in Juniata County, PA?

Juniata County is in Zone 6a with an average last frost of April 24. Plan your Chard planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Juniata County, PA?

Juniata County, Pennsylvania is in USDA Hardiness Zone 6a. The average last spring frost is April 24 and first fall frost is October 22.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Juniata County gardeners in Zone 6a organize planting dates, track what's growing, and never miss a planting window.

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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 Juniata County, PA. Local conditions may vary. Last updated: April 2026.