When to Plant Cucumber in Charleston County, SC
Cucumbers are a warm-season vine crop available in slicing and pickling varieties. They are prolific producers when given warmth, moisture, and a trellis to climb.
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 95°F, so Cucumber may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Cucumber will need more frequent watering and organic matter to retain nutrients.
Charleston County Soil Profile
Soil Type
Sandy Loam
Soil pH
5-6
Drainage
Well Drained
Plant Planting Risk Windows
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
Cucumber Planting Timeline — Charleston County, SC
Cucumber Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | February 6 | Feb 6 – Feb 20 |
| Transplant Outdoors | March 20 | Mar 20 – Apr 3 |
| Direct Sow | March 13 | Mar 13 – Apr 3 |
| Harvest | May 15 | May 15 – Jul 10 |
Plant 0.5" deep · 24" apart · Rows 48" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Start Indoors |
| March | Transplant Outdoors Direct Sow |
| April | Transplant Outdoors Direct Sow |
| May | Harvest |
| June | Harvest |
| July | Harvest |
| August | — |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
Sun
Full Sun (6-8+ hours)
Water
High — keep soil consistently moist
Days to Maturity
50–70 days
Soil pH
6 – 7
USDA Zone
Zone 8b
Growing Season
256 days
Growing Tips for Charleston County
Direct sow after last frost or start indoors 3 weeks early. Provide a trellis for vining types to save space and improve air circulation. Harvest frequently to encourage production.
Companion Planting
Good Companions
Avoid Planting Near
Level Up Your Garden
Cucumber in Other Locations
Frequently Asked Questions
When should I plant Cucumber in Charleston County, SC?
Charleston County is in Zone 8b with an average last frost of March 6. Plan your Cucumber planting based on this frost date — 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.
Plan Your Garden with Confidence
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