Blog

When to plant Cumin in Mohave County County,

In Zone 9b (Mohave County County), direct-sow Cumin between March 15 and April 5 for spring, after the April 5 last-frost mark. A second sowing from September 13 to September 27 extends the harvest into fall.

When to Plant Cumin in Mohave County, AZ

Mohave County, Arizona Zone 9b June

June to-do list for Mohave County, Arizona

June is a pivotal month for Mohave County, Arizona gardens. Focus on these tasks first and you'll set up the rest of the season for success.

Avg. last frost April 5
Avg. first frost November 8
Soil temp (4") 72°F
Watering Critical
Pest pressure High
Daylight 14.4 hrs
Looking ahead to July
  • First harvests: cumin

Instant PDF download. No spam, unsubscribe any time.

Cumin is a warm-season annual herb whose seeds are one of the most widely used spices globally. It requires a long, hot growing season of 3-4 months.

Mohave County, Arizona is in USDA Zone 9b. The average last spring frost is April 5 and the first fall frost is November 8, giving you a growing season of approximately 217 days.

At an elevation of 3,748 feet, Mohave County receives approximately 8.2 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 96°F, so Cumin may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Cumin will need more frequent watering and organic matter to retain nutrients. With low rainfall, drip irrigation is essential for growing Cumin successfully. Mulch heavily to conserve soil moisture.

Mohave County, AZ (Zone 9b) Long season
217 days
Last Spring Frost April 5
217 growing days
First Fall Frost November 8
Share this guide:

Mohave County Soil Profile

Soil Type

Sandy Loam

Soil pH

7.2-8.4

Drainage

Well Drained

Cumin Planting Risk Windows

Early Start (70% safe) ✓ Fits season (65 days to spare)
Start indoors: Feb 23 Transplant: Mar 16 🍅 Harvest: Jun 29 – Aug 31
Recommended (50%) ✓ Fits season (56 days to spare)
Start indoors: Mar 8 Transplant: Mar 29 🍅 Harvest: Jul 12 – Sep 13
Safe Start (90%) ✓ Fits season (57 days to spare)
Start indoors: Mar 20 Transplant: Apr 10 🍅 Harvest: Jul 24 – Sep 25

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 Mohave County

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

Soil pH

Your soil pH (7.2–8.4) overlaps with Cumin's range (6.0–8.0), though not a perfect match.

Soil Texture

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

Drainage

Drainage is adequate for Cumin.

Organic Matter

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

How to Plant Cumin

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

Fall planting: Sow 8 weeks before your first frost date for a fall harvest.

Cumin Water Budget

Plant needs
0.5″/week
Rainfall provides
0.2″/week
You supply
0.6″/week
Watering frequency 1-2 times/week
Season total 1,139 gal / 100 sq ft
Drought risk

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

Monthly Watering Guide for Cumin

Cumin needs approximately 0.5 inches of water per week (2.2" per month). Here's how your county's rainfall compares month by month.

Month Cumin Needs Rainfall You Supplement Action
Jan 0.6" 0" ❄️ Dormant
Feb 0.4" 0" ❄️ Dormant
Mar 0.4" 0" ❄️ Dormant
Apr 2.2" 0.3" 1.9" 🚿 Regular watering
May 2.2" 0.2" 2" 🚿 Regular watering
Jun 2.2" 0.3" 1.9" 🚿 Regular watering
Jul 2.2" 1.5" 0.7" 💧 Light watering
Aug 2.2" 1.6" 0.6" 💧 Light watering
Sep 2.2" 1" 1.2" 🚿 Regular watering
Oct 2.2" 0.8" 1.4" 🚿 Regular watering
Nov 2.2" 0.4" 1.8" 🚿 Regular watering
Dec 0.6" 0" ❄️ Dormant

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

Cumin 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.

Cumin needs ~2,420 GDD — county provides 4,774 GDD Excellent fit

Cumin Planting Timeline — Mohave County, AZ

Cumin Planting Calendar

Activity When Date Range
Start Indoors March 8 Mar 8 – Mar 22
Transplant Outdoors March 29 Mar 29 – Apr 12
Direct Sow March 15 Mar 15 – Apr 5
Harvest July 12 Jul 12 – Sep 13
Fall Sowing September 13 Sep 13 – Sep 27

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

Month-by-Month Timeline

MonthActivities
January
February
March Start Indoors Transplant Outdoors Direct Sow
April Transplant Outdoors Direct Sow
May
June
July Harvest
August Harvest
September Fall Sowing Harvest
October
November
December
Share this guide:

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.5"/week · 1-2 times/week

📅 Days to Maturity

100–120 days

🧪 Soil pH

Needs 6–8 · Your soil: acceptable

🗺️ USDA Zone

Zone 9b

📆 Growing Season

217 days in Mohave County

Growing Tips for Cumin in Mohave County

Direct sow Cumin outdoors after April 05 in Mohave County when soil has warmed and frost danger has passed.

Sandy soil in Mohave County dries quickly — mulch Cumin 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 Mohave County, provide afternoon shade for Cumin and water deeply in the morning.

Common pests for Cumin in this region include carrot rust fly and parsleyworm. Use row covers early in the season and inspect plants weekly.

Mohave County receives only 8" of rain annually. Cumin needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.

General growing tips

Start seeds indoors 4 weeks before last frost. Transplant after all danger of frost. Harvest when seed heads turn brown. Requires consistent warmth for proper seed development.

Companion Planting

Good Companions

Avoid Planting Near

  • Fennel

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Cumin in Mohave County, AZ?

Mohave County is in Zone 9b with an average last frost of April 5. Plan your Cumin planting based on this frost date — see the calendar above for exact timing.

What planting zone is Mohave County, AZ?

Mohave County, Arizona is in USDA Hardiness Zone 9b. The average last spring frost is April 5 and first fall frost is November 8.

When should I plant Cumin in Mohave County, ?

In Mohave County, , plant Cumin after the last frost (around April 5) and before the first frost (around November 8). Best results when soil holds above 50°F.

What growing zone is Mohave County, for Cumin?

Mohave County sits in USDA Zone 9b. Cumin grows reliably in zones 5a through 11b, so it's a good fit here.

Can Cumin grow in Mohave County's climate?

Yes — Cumin grows well in Mohave County's temperate climate. Mohave County averages a 217-day frost-free season, with last frost around April 5 and first frost around November 8.

🌱

Your Mohave County Garden Planner — Free

A 22-page printable planner built for Mohave County (Zone 9b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

Instant PDF download. No spam, unsubscribe any time.

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

Sources & credits

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