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When to Plant Elderberries in Sullivan County, PA

Elderberries are fast-growing shrubs or small trees producing clusters of small, dark berries used for syrups, wines, and immune-boosting preparations. The flowers are also edible.

Sullivan County, Pennsylvania is in USDA Zone 5a. The average last spring frost is May 1 and the first fall frost is October 17, giving you a growing season of approximately 169 days.

At an elevation of 560 feet, Sullivan County receives approximately 44.1 inches of rainfall annually with predominantly silt loam soil. Summer highs average 87ยฐF, providing good warmth for Elderberries during the growing season.

Sullivan County, PA (Zone 5a) Moderate season
169 days
Last Spring Frost May 1
169 growing days
First Fall Frost October 17

Sullivan County Soil Profile

Soil Type

Silt Loam

Soil pH

4.9-6.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season
Transplant: May 18
Recommended (50%) ✓ Fits season
Transplant: May 22
Safe Start (90%) ✓ Fits season
Transplant: Jun 7

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
1.1″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Elderberries needs ~13,916 GDD — county provides 2,577 GDD May not mature

Elderberries Planting Timeline โ€” Sullivan County, PA

Elderberries Planting Calendar

Activity When Date Range
Transplant Outdoors May 22 May 22 โ€“ Jun 5

ยท 120" apart ยท Rows 144" apart

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March โ€”
April โ€”
May Transplant Outdoors
June Transplant Outdoors
July โ€”
August โ€”
September โ€”
October โ€”
November โ€”
December โ€”

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

730โ€“1095 days

Soil pH

5.5 โ€“ 6.5

USDA Zone

Zone 5a

Growing Season

169 days

Growing Tips for Sullivan County

Plant at least two varieties for cross-pollination. Prune annually to remove old canes and maintain shape. Berries must be cooked before eating as raw berries are mildly toxic.

Companion Planting

Good Companions

Level Up Your Garden

Frequently Asked Questions

When should I plant Elderberries in Sullivan County, PA?

Sullivan County is in Zone 5a with an average last frost of May 1. Plan your Elderberries planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Sullivan County, PA?

Sullivan County, Pennsylvania is in USDA Hardiness Zone 5a. The average last spring frost is May 1 and first fall frost is October 17.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Sullivan County gardeners in Zone 5a 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 Sullivan County, PA. Local conditions may vary. Last updated: April 2026.