When to Plant Leeks in Roosevelt County, NM
Roosevelt County, New Mexico gardeners: here's your May plan
We've pulled the most time-sensitive tasks for Roosevelt County, New Mexico this May and put them front and centre. Tackle them in order.
-
Time to start leeks inside
Your window is short. These crops want several weeks of indoor growth before they go outside.
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.
Roosevelt County, New Mexico is in USDA Zone 7b. The average last spring frost is April 18 and the first fall frost is October 22, giving you a growing season of approximately 187 days.
At an elevation of 3,802 feet, Roosevelt County receives approximately 18 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.
Roosevelt County Soil Profile
Soil Type
Sandy Loam
Soil pH
7.2-8.4
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 Roosevelt County
How your county's soil matches Leeks's growing requirements.
Soil pH
Your soil pH (7.2–8.4) is more alkaline than Leeks prefers (6.0–7.0). Add sulfur or peat moss to lower pH.
Soil Texture
Sandy soil in Roosevelt 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 (0.7%). 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 | — | 1.3" | 0" | ❄️ Dormant |
| Feb | — | 0.9" | 0" | ❄️ Dormant |
| Mar | — | 1.1" | 0" | ❄️ Dormant |
| Apr | 3.5" | 0.5" | 3" | 🚿 Regular watering |
| May | 3.5" | 0.3" | 3.2" | 🚿 Regular watering |
| Jun | 3.5" | 0.6" | 2.9" | 🚿 Regular watering |
| Jul | 3.5" | 3.3" | 0.2" | 💧 Light watering |
| Aug | 3.5" | 3.9" | 0" | ✅ Rainfall sufficient |
| Sep | 3.5" | 2.6" | 0.9" | 💧 Light watering |
| Oct | 3.5" | 1.4" | 2.1" | 🚿 Regular watering |
| Nov | — | 1" | 0" | ❄️ Dormant |
| Dec | — | 1" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Apr–Oct in Roosevelt 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 — Roosevelt County, NM
Leeks Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 14 | Mar 14 – Mar 28 |
| Transplant Outdoors | April 18 | Apr 18 – May 2 |
| Direct Sow | April 4 | Apr 4 – Apr 25 |
| Harvest | July 18 | Jul 18 – Oct 3 |
| Fall Sowing | August 13 | Aug 13 – Aug 27 |
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 | Transplant Outdoors |
| June | — |
| July | Harvest |
| 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 7b
📆 Growing Season
187 days in Roosevelt County
Growing Tips for Leeks in Roosevelt County
Direct sow Leeks outdoors after April 18 in Roosevelt County when soil has warmed and frost danger has passed.
Sandy soil in Roosevelt County dries quickly — mulch Leeks with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.
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
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Leeks in Other Locations
Frequently Asked Questions
When should I plant Leeks in Roosevelt County, NM?
Roosevelt County is in Zone 7b with an average last frost of April 18. Plan your Leeks planting based on this frost date — see the calendar above for exact timing.
What planting zone is Roosevelt County, NM?
Roosevelt County, New Mexico is in USDA Hardiness Zone 7b. The average last spring frost is April 18 and first fall frost is October 22.
Your Roosevelt County Garden Planner — Free
A 24-page printable planner built for Roosevelt 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.