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When to Plant Mulberries in Charleston County, SC

Mulberries are fast-growing, long-lived trees that produce abundant sweet-tart berries over an extended harvest period. The berries resemble elongated blackberries.

Charleston County, South Carolina is in USDA Zone 8b. The average last spring frost is March 6 and the first fall frost is November 17, giving you a growing season of approximately 256 days.

At an elevation of 275 feet, Charleston County receives approximately 48.1 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 95ยฐF, so Mulberries may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring โ€” great for early planting โ€” but Mulberries will need more frequent watering and organic matter to retain nutrients.

Charleston County, SC (Zone 8b) Long season
256 days
Last Spring Frost March 6
256 growing days
First Fall Frost November 17

Charleston County Soil Profile

Soil Type

Sandy Loam

Soil pH

5-6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season
Transplant: Mar 13
Recommended (50%) ✓ Fits season
Transplant: Mar 27
Safe Start (90%) ✓ Fits season
Transplant: Apr 19

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
0.8″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 480 gal / 100 sq ft
Mulberries needs ~27,147 GDD — county provides 5,440 GDD May not mature

Mulberries Planting Timeline โ€” Charleston County, SC

Mulberries Planting Calendar

Activity When Date Range
Transplant Outdoors March 27 Mar 27 โ€“ Apr 10

ยท 120" apart ยท Rows 144" apart

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March Transplant Outdoors
April Transplant Outdoors
May โ€”
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€“1825 days

Soil pH

5.5 โ€“ 7

USDA Zone

Zone 8b

Growing Season

256 days

Growing Tips for Charleston County

Plant away from driveways and patios as fallen berries stain. Minimal pruning is needed. Harvest by shaking branches over a tarp. Birds love mulberries so plant extra.

Companion Planting

Good Companions

Level Up Your Garden

Frequently Asked Questions

When should I plant Mulberries in Charleston County, SC?

Charleston County is in Zone 8b with an average last frost of March 6. Plan your Mulberries planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Charleston County, SC?

Charleston County, South Carolina is in USDA Hardiness Zone 8b. The average last spring frost is March 6 and first fall frost is November 17.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Charleston County gardeners in Zone 8b 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 Charleston County, SC. Local conditions may vary. Last updated: April 2026.