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When to Plant Chamomile in Sandoval County, NM

Sandoval County, New Mexico Zone 7b May

May in the garden — Sandoval County, New Mexico

We've pulled the most time-sensitive tasks for Sandoval County, New Mexico this May and put them front and centre. Tackle them in order.

Avg. last frost May 10
Avg. first frost October 5
Soil temp (4") 54°F
Watering Critical
Pest pressure Low
Daylight 13.9 hrs
  1. Transplant chamomile outside

    Plant tomatoes deep — bury the stem up to the first true leaves to grow extra roots. Everything else goes in at the same depth it grew in the tray.

Looking ahead to June
  • Starting indoors: chamomile

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Chamomile is a daisy-like herb famous for its calming, apple-scented tea. German chamomile is an annual while Roman chamomile is a perennial ground cover.

Sandoval County, New Mexico is in USDA Zone 7b. The average last spring frost is May 10 and the first fall frost is October 5, giving you a growing season of approximately 148 days.

At an elevation of 4,259 feet, Sandoval County receives approximately 13.2 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 91°F, providing good warmth for Chamomile during the growing season. Sandy soil warms quickly in spring — great for early planting — but Chamomile will need more frequent watering and organic matter to retain nutrients. With low rainfall, drip irrigation is essential for growing Chamomile successfully. Mulch heavily to conserve soil moisture.

Sandoval County, NM (Zone 7b) Short season
148 days
Last Spring Frost May 10
148 growing days
First Fall Frost October 5
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Sandoval County Soil Profile

Soil Type

Sandy Loam

Soil pH

7.1-8.6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (21 days to spare)
Start indoors: Mar 26 Transplant: Apr 23 🍅 Harvest: Jun 25 – Sep 3
Recommended (50%) ✓ Fits season (22 days to spare)
Start indoors: Apr 5 Transplant: May 3 🍅 Harvest: Jul 5 – Sep 13
Safe Start (90%) ✓ Fits season (4 days to spare)
Start indoors: May 11 Transplant: Jun 8 🍅 Harvest: Aug 10 – Oct 19

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 Sandoval County

How your county's soil matches Chamomile's growing requirements.

Soil pH

Your soil pH (7.1–8.6) is more alkaline than Chamomile prefers (5.6–7.5). Add sulfur or peat moss to lower pH.

Soil Texture

Sandy soil in Sandoval County warms quickly in spring but drains fast. Chamomile will need more frequent watering and regular compost additions to retain nutrients.

Drainage

Drainage is adequate for Chamomile.

Organic Matter

Organic matter is low (0.8%). Add 2-3 inches of compost before planting Chamomile.

How to Plant Chamomile

0.5"
Planting Depth
8"
Between Plants
12"
Between Rows

Fall planting: Sow 10 weeks before your first frost date for a fall harvest.

Succession Planting Chamomile

2
successive plantings in your 148-day season

Sow every 6.9 weeks. Last sowing by Jul 07 to harvest before frost.

For a dedicated fall crop, sow by Jul 27.

Plant Water Budget

Plant needs
0.4″/week
Rainfall provides
0.4″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 230 gal / 100 sq ft
Drought risk

Water stress score is 10/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Chamomile

Chamomile needs approximately 0.4 inches of water per week (1.7" per month). Here's how your county's rainfall compares month by month.

Month Chamomile Needs Rainfall You Supplement Action
Jan 0.9" 0" ❄️ Dormant
Feb 0.7" 0" ❄️ Dormant
Mar 0.8" 0" ❄️ Dormant
Apr 0.4" 0" ❄️ Dormant
May 1.7" 0.3" 1.4" 🚿 Regular watering
Jun 1.7" 0.4" 1.3" 🚿 Regular watering
Jul 1.7" 2.4" 0" ✅ Rainfall sufficient
Aug 1.7" 2.4" 0" ✅ Rainfall sufficient
Sep 1.7" 1.8" 0" ✅ Rainfall sufficient
Oct 1.7" 1.3" 0.4" 💧 Light watering
Nov 0.8" 0" ❄️ Dormant
Dec 1" 0" ❄️ Dormant

Water needs are for active growing months only (May–Oct in Sandoval County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Chamomile 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.

Chamomile needs ~1,369 GDD — county provides 2,701 GDD Excellent fit

Chamomile Planting Timeline — Sandoval County, NM

Chamomile Planting Calendar

Activity When Date Range
Start Indoors April 5 Apr 5 – Apr 19
Transplant Outdoors May 3 May 3 – May 17
Direct Sow April 26 Apr 26 – May 17
Harvest July 5 Jul 5 – Sep 13
Fall Sowing July 27 Jul 27 – Aug 10

Plant 0.5" deep · 8" apart · Rows 12" apart

Month-by-Month Timeline

MonthActivities
January
February
March
April Start Indoors Direct Sow
May Transplant Outdoors Direct Sow
June
July Fall Sowing Harvest
August Fall Sowing Harvest
September Harvest
October
November
December
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Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.4"/week · Only during dry spells

📅 Days to Maturity

60–90 days

🧪 Soil pH

Needs 5.6–7.5 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 7b

📆 Growing Season

148 days in Sandoval County

Growing Tips for Chamomile in Sandoval County

Direct sow Chamomile outdoors after May 10 in Sandoval County when soil has warmed and frost danger has passed.

Sandy soil in Sandoval County dries quickly — mulch Chamomile with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

Common pests for Chamomile in this region include aphids and slugs. Use row covers early in the season and inspect plants weekly.

General growing tips

Direct sow on the soil surface as seeds need light. Harvest flowers when petals begin to curl back. Chamomile self-sows freely and improves the health of nearby plants.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Chamomile in Sandoval County, NM?

Sandoval County is in Zone 7b with an average last frost of May 10. Plan your Chamomile planting based on this frost date — see the calendar above for exact timing.

What planting zone is Sandoval County, NM?

Sandoval County, New Mexico is in USDA Hardiness Zone 7b. The average last spring frost is May 10 and first fall frost is October 5.

🌱

Your Sandoval County Garden Planner — Free

A 24-page printable planner built for Sandoval 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.

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Sandoval County, NM. Local conditions may vary. Last updated: May 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.