When to Plant Scallions in Harford County, MD
Scallions (green onions) are mild-flavored alliums harvested for their slender green tops and white bases. They are quick-growing and perfect for succession planting.
Harford County, Maryland is in USDA Zone 7a. The average last spring frost is April 8 and the first fall frost is November 2, giving you a growing season of approximately 208 days.
At an elevation of 277 feet, Harford County receives approximately 38.7 inches of rainfall annually with predominantly silt loam soil. Summer highs average 91°F, providing good warmth for Scallions during the growing season.
Harford County Soil Profile
Soil Type
Silt Loam
Soil pH
5.7-7.1
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
Scallions Planting Timeline — Harford County, MD
Scallions Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 4 | Mar 4 – Mar 18 |
| Transplant Outdoors | April 8 | Apr 8 – Apr 22 |
| Direct Sow | March 25 | Mar 25 – Apr 15 |
| Fall Sowing | August 24 | Aug 24 – Sep 7 |
| Harvest | June 3 | Jun 3 – Jul 1 |
Plant 0.5" deep · 6" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors Direct Sow |
| April | Transplant Outdoors Direct Sow |
| May | — |
| June | Harvest |
| July | Harvest |
| August | Fall Sowing |
| September | Fall Sowing |
| October | — |
| November | — |
| December | — |
Growing Conditions
Sun
Full Sun (6-8+ hours)
Water
Moderate — regular watering
Days to Maturity
50–70 days
Soil pH
6 – 7
USDA Zone
Zone 7a
Growing Season
208 days
Growing Tips for Harford County
Direct sow every 3 weeks for continuous harvest. Thin to 1 inch apart or grow in clusters. Harvest when pencil-thick by pulling or cutting at soil level.
Companion Planting
Good Companions
Avoid Planting Near
Level Up Your Garden
Scallions in Other Locations
Frequently Asked Questions
When should I plant Scallions in Harford County, MD?
Harford County is in Zone 7a with an average last frost of April 8. Plan your Scallions planting based on this frost date — see the calendar above for exact timing.
What planting zone is Harford County, MD?
Harford County, Maryland is in USDA Hardiness Zone 7a. The average last spring frost is April 8 and first fall frost is November 2.
Plan Your Garden with Confidence
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