When to Plant Valerian in Hidalgo County, NM
This month in Hidalgo County, New Mexico
We've pulled the most time-sensitive tasks for Hidalgo County, New Mexico this May and put them front and centre. Tackle them in order.
Valerian is a tall perennial herb with fragrant white or pink flower clusters, valued for its root which is used as a natural sleep aid. It attracts pollinators and earthworms.
Hidalgo County, New Mexico is in USDA Zone 8a. The average last spring frost is April 22 and the first fall frost is October 28, giving you a growing season of approximately 189 days.
At an elevation of 2,926 feet, Hidalgo County receives approximately 11 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 94°F, providing good warmth for Valerian during the growing season. Sandy soil warms quickly in spring — great for early planting — but Valerian will need more frequent watering and organic matter to retain nutrients. With low rainfall, drip irrigation is essential for growing Valerian successfully. Mulch heavily to conserve soil moisture.
Hidalgo County Soil Profile
Soil Type
Sandy Loam
Soil pH
7.2-8.7
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 Hidalgo County
How your county's soil matches Valerian's growing requirements.
Soil pH
Your soil pH (7.2–8.7) is more alkaline than Valerian prefers (5.5–7.0). Add sulfur or peat moss to lower pH.
Soil Texture
Sandy soil in Hidalgo County warms quickly in spring but drains fast. Valerian will need more frequent watering and regular compost additions to retain nutrients.
Drainage
Drainage is adequate for Valerian.
Organic Matter
Organic matter is low (0.8%). Add 2-3 inches of compost before planting Valerian.
How to Plant Valerian
Plant Water Budget
Water stress score is 10/10 — consider drought-tolerant varieties and mulching
Monthly Watering Guide for Valerian
Valerian needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.
| Month | Valerian Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 0.9" | 0" | ❄️ Dormant |
| Feb | — | 0.6" | 0" | ❄️ Dormant |
| Mar | — | 0.7" | 0" | ❄️ Dormant |
| Apr | 4.3" | 0.3" | 4" | 🚿 Regular watering |
| May | 4.3" | 0.3" | 4" | 🚿 Regular watering |
| Jun | 4.3" | 0.4" | 3.9" | 🚿 Regular watering |
| Jul | 4.3" | 1.7" | 2.6" | 🚿 Regular watering |
| Aug | 4.3" | 2.1" | 2.2" | 🚿 Regular watering |
| Sep | 4.3" | 1.4" | 2.9" | 🚿 Regular watering |
| Oct | 4.3" | 1.1" | 3.2" | 🚿 Regular watering |
| Nov | — | 0.7" | 0" | ❄️ Dormant |
| Dec | — | 0.8" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Apr–Oct in Hidalgo County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Valerian 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.
Valerian Planting Timeline — Hidalgo County, NM
Valerian Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | April 29 | Apr 29 – May 13 |
| Harvest | September 2 | Sep 2 – Dec 9 |
Plant 0.5" deep · 8" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Transplant Outdoors |
| May | Transplant Outdoors |
| June | — |
| July | — |
| August | — |
| September | Harvest |
| October | Harvest |
| November | Harvest |
| December | Harvest |
Growing Conditions
☀️ Sun
Partial Shade (3-6 hours)
💧 Water
1"/week · 2-3 times/week
📅 Days to Maturity
120–180 days
🧪 Soil pH
Needs 5.5–7 · Your soil: too_alkaline
🗺️ USDA Zone
Zone 8a
📆 Growing Season
189 days in Hidalgo County
Growing Tips for Valerian in Hidalgo County
Direct sow Valerian outdoors after April 22 in Hidalgo County when soil has warmed and frost danger has passed.
Sandy soil in Hidalgo County dries quickly — mulch Valerian with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.
Your 189.0-day growing season in Hidalgo County is tight for Valerian (120.0-180.0 days to maturity). Start indoors and choose early-maturing varieties.
Hidalgo County receives only 11" of rain annually. Valerian needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.
General growing tips
Start seeds indoors and transplant after last frost. Harvest roots in fall of the second year. Deadhead flowers unless you want self-seeding. Cats are attracted to valerian root.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Valerian in Other Locations
Frequently Asked Questions
When should I plant Valerian in Hidalgo County, NM?
Hidalgo County is in Zone 8a with an average last frost of April 22. Plan your Valerian planting based on this frost date — see the calendar above for exact timing.
What planting zone is Hidalgo County, NM?
Hidalgo County, New Mexico is in USDA Hardiness Zone 8a. The average last spring frost is April 22 and first fall frost is October 28.
Your Hidalgo County Garden Planner — Free
A 24-page printable planner built for Hidalgo County (Zone 8a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.