When to Plant Celery in Clark County, SD
Celery is a marshland plant that requires consistent moisture and cool temperatures to produce crisp, flavorful stalks. It is a rewarding but demanding garden crop.
Clark County, South Dakota is in USDA Zone 4a. The average last spring frost is May 3 and the first fall frost is October 5, giving you a growing season of approximately 155 days.
At an elevation of 799 feet, Clark County receives approximately 28.2 inches of rainfall annually with predominantly loam soil. Summer highs average 81°F, so choose short-season varieties of Celery to ensure they mature before fall.
Clark County Soil Profile
Soil Type
Loam
Soil pH
6.3-7.3
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
Celery Planting Timeline — Clark County, SD
Celery Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 22 | Mar 22 – Apr 5 |
| Transplant Outdoors | May 3 | May 3 – May 17 |
| Direct Sow | April 26 | Apr 26 – May 17 |
| Fall Sowing | July 13 | Jul 13 – Jul 27 |
| Harvest | July 26 | Jul 26 – Sep 20 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors |
| April | Start Indoors Direct Sow |
| May | Transplant Outdoors Direct Sow |
| June | — |
| July | Fall Sowing Harvest |
| August | Harvest |
| September | Harvest |
| October | — |
| November | — |
| December | — |
Growing Conditions
Sun
Full Sun (6-8+ hours)
Water
High — keep soil consistently moist
Days to Maturity
80–120 days
Soil pH
6 – 7
USDA Zone
Zone 4a
Growing Season
155 days
Growing Tips for Clark County
Start seeds indoors 10-12 weeks before last frost. Keep soil consistently moist and never let it dry out. Blanch stalks by mounding soil or using collars for milder flavor.
Companion Planting
Good Companions
Avoid Planting Near
Level Up Your Garden
Celery in Other Locations
Frequently Asked Questions
When should I plant Celery in Clark County, SD?
Clark County is in Zone 4a with an average last frost of May 3. Plan your Celery planting based on this frost date — see the calendar above for exact timing.
What planting zone is Clark County, SD?
Clark County, South Dakota is in USDA Hardiness Zone 4a. The average last spring frost is May 3 and first fall frost is October 5.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Clark County gardeners in Zone 4a organize planting dates, track what's growing, and never miss a planting window.
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