When to plant Leeks in Montgomery County, MD
Leeks planted in Montgomery County between April 2 and April 23 matures in 90–150 days — well before the October 20 first frost. A second sowing from August 11 to August 25 extends the harvest into fall.
When to Plant Leeks in Montgomery County, MD
Leeks are a mild, sweet allium that produces long white shanks. They are more refined than onions and are a key ingredient in soups, stews, and gratins.
Montgomery County, Maryland is in USDA Zone 7b. The average last spring frost is April 16 and the first fall frost is October 20, giving you a growing season of approximately 187 days.
At an elevation of 661 feet, Montgomery County receives approximately 41.7 inches of rainfall annually with predominantly silt loam soil. Summer highs average 93°F, providing good warmth for Leeks during the growing season.
Montgomery County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Leeks Planting Timeline — Montgomery County, MD
Leeks Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 12 | Mar 12 – Mar 26 |
| Transplant Outdoors | April 16 | Apr 16 – Apr 30 |
| Direct Sow | April 2 | Apr 2 – Apr 23 |
| Harvest | July 16 | Jul 16 – Oct 1 |
| Fall Sowing | August 11 | Aug 11 – Aug 25 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors |
| April | Transplant Outdoors Direct Sow |
| May | — |
| June | — |
| July | Harvest |
| August | Fall Sowing Harvest |
| September | Harvest |
| October | Harvest |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
Moderate — regular watering
📅 Days to Maturity
90–150 days
🧪 Soil pH
Needs 6–7 · Your soil: N/A
🗺️ USDA Zone
Zone 7b
📆 Growing Season
187 days in Montgomery County
Growing Tips for Montgomery County
Start seeds indoors 10-12 weeks before last frost. Transplant into trenches and hill soil around stems as they grow to increase the white portion. Harvest as needed.
Companion Planting
Good Companions
Avoid Planting Near
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Leeks in Other Locations
Frequently Asked Questions
When should I plant Leeks in Montgomery County, MD?
Montgomery County is in Zone 7b with an average last frost of April 16. Plan your Leeks planting based on this frost date — see the calendar above for exact timing.
What planting zone is Montgomery County, MD?
Montgomery County, Maryland is in USDA Hardiness Zone 7b. The average last spring frost is April 16 and first fall frost is October 20.
When should I plant Leeks in Montgomery County, MD?
In Montgomery County, MD, plant Leeks after the last frost (around April 16) and before the first frost (around October 20). Best results when soil holds above 50°F.
What growing zone is Montgomery County, MD for Leeks?
Montgomery County sits in USDA Zone 7b. Leeks grows reliably in zones 3a through 10b, so it's a good fit here.
Can Leeks grow in Montgomery County's climate?
Yes — Leeks grows well in Montgomery County's temperate climate. Montgomery County averages a 187-day frost-free season, with last frost around April 16 and first frost around October 20.
Your Montgomery County Garden Planner — Free
A 22-page printable planner built for Montgomery County (Zone 7b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.