When to Plant Epazote in Pima County, AZ
Pima County, Arizona gardeners: here's your May plan
Each item below is timed to Pima County, Arizona's frost dates and soil temperatures. Skip nothing, stress about nothing.
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Sow epazote in trays indoors
These need a head start before your last frost (April 1). Sow into cells now so you're ready to transplant in a few weeks.
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Harvest epazote as they ripen
Morning harvests are best — cooler temperatures mean crisper produce and longer fridge life.
To set up a strong June, finish these tasks
- First harvests: epazote
Epazote is a pungent Mexican herb traditionally cooked with black beans to reduce their gas-causing properties. It has a strong, unique flavor that is an acquired taste.
Pima County, Arizona is in USDA Zone 9b. The average last spring frost is April 1 and the first fall frost is November 9, giving you a growing season of approximately 222 days.
At an elevation of 4,327 feet, Pima County receives approximately 14.4 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 103°F, so Epazote may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Epazote will need more frequent watering and organic matter to retain nutrients. With low rainfall, drip irrigation is essential for growing Epazote successfully. Mulch heavily to conserve soil moisture.
Pima County Soil Profile
Soil Type
Sandy Loam
Soil pH
6.8-8.3
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 Pima County
How your county's soil matches Epazote's growing requirements.
Soil pH
Your soil pH (6.8–8.3) overlaps with Epazote's range (6.0–8.0), though not a perfect match.
Soil Texture
Sandy soil in Pima County warms quickly in spring but drains fast. Epazote will need more frequent watering and regular compost additions to retain nutrients.
Drainage
Drainage is adequate for Epazote.
Organic Matter
Organic matter is low (0.9%). Add 2-3 inches of compost before planting Epazote.
How to Plant Epazote
Succession Planting Epazote
Sow every 5.1 weeks. Last sowing by Sep 10 to harvest before frost.
Plant Water Budget
Water stress score is 10/10 — consider drought-tolerant varieties and mulching
Monthly Watering Guide for Epazote
Epazote 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 | Epazote Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 0.9" | 0" | ❄️ Dormant |
| Feb | — | 0.8" | 0" | ❄️ Dormant |
| Mar | — | 0.7" | 0" | ❄️ Dormant |
| Apr | 2.2" | 0.5" | 1.7" | 🚿 Regular watering |
| May | 2.2" | 0.4" | 1.8" | 🚿 Regular watering |
| Jun | 2.2" | 0.5" | 1.7" | 🚿 Regular watering |
| Jul | 2.2" | 2.7" | 0" | ✅ Rainfall sufficient |
| Aug | 2.2" | 3.2" | 0" | ✅ Rainfall sufficient |
| Sep | 2.2" | 1.9" | 0.3" | 💧 Light watering |
| Oct | 2.2" | 1.4" | 0.8" | 💧 Light watering |
| Nov | 2.2" | 0.7" | 1.5" | 🚿 Regular watering |
| Dec | — | 0.9" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Apr–Nov in Pima County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Epazote 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.
Epazote Planting Timeline — Pima County, AZ
Epazote Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | February 18 | Feb 18 – Mar 4 |
| Transplant Outdoors | April 8 | Apr 8 – Apr 22 |
| Direct Sow | April 8 | Apr 8 – Apr 29 |
| Harvest | May 27 | May 27 – Jul 22 |
Plant 0.5" deep · 8" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Start Indoors |
| March | Start Indoors |
| April | Transplant Outdoors Direct Sow |
| May | Harvest |
| June | Harvest |
| July | Harvest |
| August | — |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
0.5"/week · 1-2 times/week
📅 Days to Maturity
45–60 days
🧪 Soil pH
Needs 6–8 · Your soil: acceptable
🗺️ USDA Zone
Zone 9b
📆 Growing Season
222 days in Pima County
Growing Tips for Epazote in Pima County
Direct sow Epazote outdoors after April 01 in Pima County when soil has warmed and frost danger has passed.
Sandy soil in Pima County dries quickly — mulch Epazote with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.
With summer highs reaching 103°F in Pima County, provide afternoon shade for Epazote and water deeply in the morning.
Your generous 222.0-day season in Pima County allows multiple plantings of Epazote. Sow every 22.0 days for continuous harvest.
Pima County receives only 14" of rain annually. Epazote needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.
General growing tips
Direct sow after last frost. Epazote grows easily and self-sows aggressively. Use sparingly in cooking as the flavor is very strong. Harvest leaves before flowering for best flavor.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Epazote in Other Locations
Frequently Asked Questions
When should I plant Epazote in Pima County, AZ?
Pima County is in Zone 9b with an average last frost of April 1. Plan your Epazote planting based on this frost date — see the calendar above for exact timing.
What planting zone is Pima County, AZ?
Pima County, Arizona is in USDA Hardiness Zone 9b. The average last spring frost is April 1 and first fall frost is November 9.
Your Pima County Garden Planner — Free
A 24-page printable planner built for Pima 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.