When to Plant Leeks in Santa Fe County, NM
Santa Fe County, New Mexico gardeners: here's your May plan
May is a pivotal month for Santa Fe County, New Mexico gardens. Focus on these tasks first and you'll set up the rest of the season for success.
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Plant out leeks
Frost risk is low now in Santa Fe County, New Mexico. If you've been covering beds overnight, you can stop.
Before June arrives, get these ready
- Starting indoors: leeks
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.
Santa Fe County, New Mexico is in USDA Zone 6b. The average last spring frost is May 10 and the first fall frost is October 7, giving you a growing season of approximately 150 days.
At an elevation of 4,073 feet, Santa Fe County receives approximately 13 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 89°F, providing good warmth for Leeks during the growing season. Sandy soil warms quickly in spring — great for early planting — but Leeks will need more frequent watering and organic matter to retain nutrients. With low rainfall, drip irrigation is essential for growing Leeks successfully. Mulch heavily to conserve soil moisture.
Santa Fe County Soil Profile
Soil Type
Sandy Loam
Soil pH
7.3-8.6
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.
Soil Compatibility in Santa Fe County
How your county's soil matches Leeks's growing requirements.
Soil pH
Your soil pH (7.3–8.6) is more alkaline than Leeks prefers (6.0–7.0). Add sulfur or peat moss to lower pH.
Soil Texture
Sandy soil in Santa Fe County warms quickly in spring but drains fast. Leeks will need more frequent watering and regular compost additions to retain nutrients.
Drainage
Drainage is adequate for Leeks.
Organic Matter
Organic matter is low (0.8%). Add 2-3 inches of compost before planting Leeks.
How to Plant Leeks
Fall planting: Sow 10 weeks before your first frost date for a fall harvest.
Plant Water Budget
Water stress score is 10/10 — consider drought-tolerant varieties and mulching
Monthly Watering Guide for Leeks
Leeks needs approximately 0.8 inches of water per week (3.5" per month). Here's how your county's rainfall compares month by month.
| Month | Leeks Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 1" | 0" | ❄️ Dormant |
| Feb | — | 0.7" | 0" | ❄️ Dormant |
| Mar | — | 0.8" | 0" | ❄️ Dormant |
| Apr | — | 0.5" | 0" | ❄️ Dormant |
| May | 3.5" | 0.3" | 3.2" | 🚿 Regular watering |
| Jun | 3.5" | 0.4" | 3.1" | 🚿 Regular watering |
| Jul | 3.5" | 2.1" | 1.4" | 💧 Light watering |
| Aug | 3.5" | 2.7" | 0.8" | 💧 Light watering |
| Sep | 3.5" | 1.6" | 1.9" | 🚿 Regular watering |
| Oct | 3.5" | 1.3" | 2.2" | 🚿 Regular watering |
| Nov | — | 0.7" | 0" | ❄️ Dormant |
| Dec | — | 0.9" | 0" | ❄️ Dormant |
Water needs are for active growing months only (May–Oct in Santa Fe County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Leeks Heat Requirements (GDD)
What are Growing Degree Days (GDD)?
Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" — every day above 50°F deposits warmth that helps your plants grow.
Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.
Leeks Planting Timeline — Santa Fe County, NM
Leeks Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | April 5 | Apr 5 – Apr 19 |
| Transplant Outdoors | May 10 | May 10 – May 24 |
| Direct Sow | April 26 | Apr 26 – May 17 |
| Harvest | August 9 | Aug 9 – Oct 25 |
| Fall Sowing | July 29 | Jul 29 – Aug 12 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Start Indoors Direct Sow |
| May | Transplant Outdoors Direct Sow |
| June | — |
| July | Fall Sowing |
| August | Fall Sowing Harvest |
| September | Harvest |
| October | Harvest |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
0.8"/week · 2-3 times/week
📅 Days to Maturity
90–150 days
🧪 Soil pH
Needs 6–7 · Your soil: too_alkaline
🗺️ USDA Zone
Zone 6b
📆 Growing Season
150 days in Santa Fe County
Growing Tips for Leeks in Santa Fe County
Direct sow Leeks outdoors after May 10 in Santa Fe County when soil has warmed and frost danger has passed.
Sandy soil in Santa Fe County dries quickly — mulch Leeks with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.
Your 150.0-day growing season in Santa Fe County is tight for Leeks (90.0-150.0 days to maturity). Start indoors and choose early-maturing varieties.
Common pests for Leeks in this region include onion maggots and thrips. Use row covers early in the season and inspect plants weekly.
General growing tips
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
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Check more plant combinations with our Companion Planting Checker →
Leeks in Other Locations
Frequently Asked Questions
When should I plant Leeks in Santa Fe County, NM?
Santa Fe County is in Zone 6b with an average last frost of May 10. Plan your Leeks planting based on this frost date — see the calendar above for exact timing.
What planting zone is Santa Fe County, NM?
Santa Fe County, New Mexico is in USDA Hardiness Zone 6b. The average last spring frost is May 10 and first fall frost is October 7.
Your Santa Fe County Garden Planner — Free
A 24-page printable planner built for Santa Fe County (Zone 6b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.