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When to Plant Blueberries in Guilford County, NC

Blueberries are long-lived shrubs producing sweet, antioxidant-rich berries. They require acidic soil and are attractive ornamental plants with fall color and spring flowers.

Guilford County, North Carolina is in USDA Zone 7b. The average last spring frost is April 6 and the first fall frost is October 30, giving you a growing season of approximately 207 days.

At an elevation of 579 feet, Guilford County receives approximately 45.6 inches of rainfall annually with predominantly clay loam soil. Summer highs average 90ยฐF, providing good warmth for Blueberries during the growing season. Clay soil retains moisture well for Blueberries, but amend with compost to improve drainage and prevent root rot.

Guilford County, NC (Zone 7b) Long season
207 days
Last Spring Frost April 6
207 growing days
First Fall Frost October 30

Guilford County Soil Profile

Soil Type

Clay Loam

Soil pH

5.6-6.4

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season
Transplant: Apr 17
Recommended (50%) ✓ Fits season
Transplant: Apr 27
Safe Start (90%) ✓ Fits season
Transplant: May 14

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
0.9″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 138 gal / 100 sq ft
Blueberries needs ~15,969 GDD — county provides 3,622 GDD May not mature

Blueberries Planting Timeline โ€” Guilford County, NC

Blueberries Planting Calendar

Activity When Date Range
Transplant Outdoors April 27 Apr 27 โ€“ May 11

ยท 48" apart ยท Rows 72" apart

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March โ€”
April Transplant Outdoors
May Transplant Outdoors
June โ€”
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

4.5 โ€“ 5.5

USDA Zone

Zone 7b

Growing Season

207 days

Growing Tips for Guilford County

Plant at least two varieties for cross-pollination. Acidify soil with sulfur or pine needle mulch to maintain pH 4.5-5.5. Protect ripening berries from birds with netting.

Companion Planting

Good Companions

Level Up Your Garden

Frequently Asked Questions

When should I plant Blueberries in Guilford County, NC?

Guilford County is in Zone 7b with an average last frost of April 6. Plan your Blueberries planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Guilford County, NC?

Guilford County, North Carolina is in USDA Hardiness Zone 7b. The average last spring frost is April 6 and first fall frost is October 30.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Guilford County gardeners in Zone 7b 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 Guilford County, NC. Local conditions may vary. Last updated: April 2026.