When to Plant Mizuna in Dona Ana County, NM
May in the garden — Dona Ana County, New Mexico
May is a pivotal month for Dona Ana 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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Begin indoor sowing: mizuna
These need a head start before your last frost (March 30). Sow into cells now so you're ready to transplant in a few weeks.
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Basket week: mizuna
If you can't use it all right away, check the food-preservation section of your planner.
Before June arrives, get these ready
- First harvests: mizuna
Mizuna is a mild-flavored Japanese mustard green with feathery, deeply serrated leaves. It is fast-growing and makes an excellent addition to salads and stir-fries.
Dona Ana County, New Mexico is in USDA Zone 8b. The average last spring frost is March 30 and the first fall frost is October 30, giving you a growing season of approximately 214 days.
At an elevation of 4,516 feet, Dona Ana County receives approximately 14.1 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 96°F, so Mizuna may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Mizuna will need more frequent watering and organic matter to retain nutrients. With low rainfall, drip irrigation is essential for growing Mizuna successfully. Mulch heavily to conserve soil moisture.
Dona Ana County Soil Profile
Soil Type
Sandy Loam
Soil pH
7.3-8.9
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 Dona Ana County
How your county's soil matches Mizuna's growing requirements.
Soil pH
Your soil pH (7.3–8.9) is more alkaline than Mizuna prefers (6.0–7.5). Add sulfur or peat moss to lower pH.
Soil Texture
Sandy soil in Dona Ana County warms quickly in spring but drains fast. Mizuna will need more frequent watering and regular compost additions to retain nutrients.
Drainage
Drainage is adequate for Mizuna.
Organic Matter
Organic matter is low (0.8%). Add 2-3 inches of compost before planting Mizuna.
How to Plant Mizuna
Fall planting: Sow 10 weeks before your first frost date for a fall harvest.
Succession Planting Mizuna
Sow every 3.4 weeks. Last sowing by Sep 15 to harvest before frost.
For a dedicated fall crop, sow by Aug 21.
Plant Water Budget
Water stress score is 10/10 — consider drought-tolerant varieties and mulching
Monthly Watering Guide for Mizuna
Mizuna needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.
| Month | Mizuna Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 1.1" | 0" | ❄️ Dormant |
| Feb | — | 0.9" | 0" | ❄️ Dormant |
| Mar | 4.3" | 0.8" | 3.5" | 🚿 Regular watering |
| Apr | 4.3" | 0.4" | 3.9" | 🚿 Regular watering |
| May | 4.3" | 0.3" | 4" | 🚿 Regular watering |
| Jun | 4.3" | 0.6" | 3.7" | 🚿 Regular watering |
| Jul | 4.3" | 2.6" | 1.7" | 💧 Light watering |
| Aug | 4.3" | 2.7" | 1.6" | 💧 Light watering |
| Sep | 4.3" | 1.7" | 2.6" | 🚿 Regular watering |
| Oct | 4.3" | 1.2" | 3.1" | 🚿 Regular watering |
| Nov | — | 0.8" | 0" | ❄️ Dormant |
| Dec | — | 1" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Oct in Dona Ana County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Mizuna 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.
Mizuna Planting Timeline — Dona Ana County, NM
Mizuna Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | February 23 | Feb 23 – Mar 9 |
| Transplant Outdoors | March 30 | Mar 30 – Apr 13 |
| Direct Sow | March 16 | Mar 16 – Apr 6 |
| Harvest | May 4 | May 4 – Jun 1 |
| Fall Sowing | August 21 | Aug 21 – Sep 4 |
Plant 0.5" deep · 6" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Start Indoors |
| March | Start Indoors Transplant Outdoors Direct Sow |
| April | Transplant Outdoors Direct Sow |
| May | Harvest |
| June | Harvest |
| July | — |
| August | Fall Sowing |
| September | Fall Sowing |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Partial Shade (3-6 hours)
💧 Water
1"/week · 2-3 times/week
📅 Days to Maturity
30–45 days
🧪 Soil pH
Needs 6–7.5 · Your soil: too_alkaline
🗺️ USDA Zone
Zone 8b
📆 Growing Season
214 days in Dona Ana County
Growing Tips for Mizuna in Dona Ana County
Direct sow Mizuna outdoors after March 30 in Dona Ana County when soil has warmed and frost danger has passed.
Sandy soil in Dona Ana County dries quickly — mulch Mizuna with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.
With summer highs reaching 96°F in Dona Ana County, provide afternoon shade for Mizuna and water deeply in the morning.
Your generous 214.0-day season in Dona Ana County allows multiple plantings of Mizuna. Sow every 15.0 days for continuous harvest.
Common pests for Mizuna in this region include cabbage worm and flea beetles. Use row covers early in the season and inspect plants weekly.
General growing tips
Direct sow in spring or fall. Harvest outer leaves as needed for a cut-and-come-again approach. Mizuna is one of the most cold-tolerant Asian greens.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Mizuna in Other Locations
Frequently Asked Questions
When should I plant Mizuna in Dona Ana County, NM?
Dona Ana County is in Zone 8b with an average last frost of March 30. Plan your Mizuna planting based on this frost date — see the calendar above for exact timing.
What planting zone is Dona Ana County, NM?
Dona Ana County, New Mexico is in USDA Hardiness Zone 8b. The average last spring frost is March 30 and first fall frost is October 30.
Your Dona Ana County Garden Planner — Free
A 24-page printable planner built for Dona Ana County (Zone 8b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.