When to Plant Garlic in Johnston County, NC
Garlic is a pungent allium planted in fall and harvested the following summer. Hardneck varieties produce edible flower stalks (scapes) and are more cold-hardy.
Johnston County, North Carolina is in USDA Zone 7b. The average last spring frost is April 3 and the first fall frost is November 3, giving you a growing season of approximately 214 days.
At an elevation of 1,120 feet, Johnston County receives approximately 49.4 inches of rainfall annually with predominantly clay loam soil. Summer highs average 92°F, providing good warmth for Garlic during the growing season. Clay soil retains moisture well for Garlic, but amend with compost to improve drainage and prevent root rot.
Johnston County Soil Profile
Soil Type
Clay Loam
Soil pH
5.6-6.7
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
Garlic Planting Timeline — Johnston County, NC
Garlic Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Fall Sowing | September 22 | Sep 22 – Oct 6 |
Plant 1" deep · 6" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | — |
| May | — |
| June | — |
| July | — |
| August | — |
| September | Fall Sowing |
| October | Fall Sowing |
| November | — |
| December | — |
Growing Conditions
Sun
Full Sun (6-8+ hours)
Water
Moderate — regular watering
Days to Maturity
90–240 days
Soil pH
6 – 7.5
USDA Zone
Zone 7b
Growing Season
214 days
Growing Tips for Johnston County
Plant individual cloves pointed end up in fall, 6 weeks before ground freezes. Mulch heavily with straw. Harvest when lower leaves begin to brown but 5-6 green leaves remain.
Companion Planting
Good Companions
Avoid Planting Near
Level Up Your Garden
Garlic in Other Locations
Frequently Asked Questions
When should I plant Garlic in Johnston County, NC?
Johnston County is in Zone 7b with an average last frost of April 3. Plan your Garlic planting based on this frost date — see the calendar above for exact timing.
What planting zone is Johnston County, NC?
Johnston County, North Carolina is in USDA Hardiness Zone 7b. The average last spring frost is April 3 and first fall frost is November 3.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Johnston County gardeners in Zone 7b organize planting dates, track what's growing, and never miss a planting window.
Get Your Free Garden Planner →Free download. Plan your entire garden season in minutes.