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When to Plant Epazote in Clatsop County, OR

Clatsop County, Oregon Zone 9a May

Your May planting checklist for Clatsop County, Oregon

Each item below is timed to Clatsop County, Oregon's frost dates and soil temperatures. Skip nothing, stress about nothing.

Avg. last frost April 12
Avg. first frost November 4
Soil temp (4") 72°F
Watering Moderate
Pest pressure High
Daylight 14.8 hrs
  1. Begin indoor sowing: epazote

    A seed-starting mix and a sunny window (or a grow light) are all you need. Keep soil warm — around 70°F — for fast germination.

Before June arrives, get these ready
  • First harvests: epazote

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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.

Clatsop County, Oregon is in USDA Zone 9a. The average last spring frost is April 12 and the first fall frost is November 4, giving you a growing season of approximately 206 days.

At an elevation of 412 feet, Clatsop County receives approximately 54.1 inches of rainfall annually with predominantly silt loam soil. Summer highs average 86°F, providing good warmth for Epazote during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Epazote root diseases.

Clatsop County, OR (Zone 9a) Long season
206 days
Last Spring Frost April 12
206 growing days
First Fall Frost November 4

Clatsop County Soil Profile

Soil Type

Silt Loam

Soil pH

5.6-6.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (98 days to spare)
Start indoors: Feb 18 Transplant: Apr 8 🍅 Harvest: May 27 – Jul 22
Recommended (50%) ✓ Fits season (94 days to spare)
Start indoors: Mar 1 Transplant: Apr 19 🍅 Harvest: Jun 7 – Aug 2
Safe Start (90%) ✓ Fits season (102 days to spare)
Start indoors: Mar 19 Transplant: May 7 🍅 Harvest: Jun 25 – Aug 20

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 Clatsop County

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

Soil pH

Your soil pH (5.6–6.7) overlaps with Epazote's range (6.0–8.0), though not a perfect match.

Soil Texture

The silt loam soil in Clatsop County is excellent for Epazote — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is excellent (4.9%) — Epazote will thrive.

How to Plant Epazote

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

Succession Planting Epazote

5
successive plantings in your 206-day season

Sow every 5.1 weeks. Last sowing by Sep 05 to harvest before frost.

Plant Water Budget

Plant needs
0.5″/week
Rainfall provides
1.1″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

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 8.4" 0" ❄️ Dormant
Feb 5.2" 0" ❄️ Dormant
Mar 4.8" 0" ❄️ Dormant
Apr 2.2" 3.8" 0" ✅ Rainfall sufficient
May 2.2" 3.6" 0" ✅ Rainfall sufficient
Jun 2.2" 2.1" 0.1" 💧 Light watering
Jul 2.2" 0.9" 1.3" 🚿 Regular watering
Aug 2.2" 1.1" 1.1" 🚿 Regular watering
Sep 2.2" 2.4" 0" ✅ Rainfall sufficient
Oct 2.2" 4.2" 0" ✅ Rainfall sufficient
Nov 2.2" 8.4" 0" ✅ Rainfall sufficient
Dec 9.3" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Nov in Clatsop 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 needs ~761 GDD — county provides 2,987 GDD Excellent fit

Epazote Planting Timeline — Clatsop County, OR

Epazote Planting Calendar

Activity When Date Range
Start Indoors March 1 Mar 1 – Mar 15
Transplant Outdoors April 19 Apr 19 – May 3
Direct Sow April 19 Apr 19 – May 10
Harvest June 7 Jun 7 – Aug 2

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.5"/week · Natural rainfall sufficient

📅 Days to Maturity

45–60 days

🧪 Soil pH

Needs 6–8 · Your soil: acceptable

🗺️ USDA Zone

Zone 9a

📆 Growing Season

206 days in Clatsop County

Growing Tips for Epazote in Clatsop County

Direct sow Epazote outdoors after April 12 in Clatsop County when soil has warmed and frost danger has passed.

Your generous 206.0-day season in Clatsop County allows multiple plantings of Epazote. Sow every 22.0 days for continuous harvest.

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 →

Frequently Asked Questions

When should I plant Epazote in Clatsop County, OR?

Clatsop County is in Zone 9a with an average last frost of April 12. Plan your Epazote planting based on this frost date — see the calendar above for exact timing.

What planting zone is Clatsop County, OR?

Clatsop County, Oregon is in USDA Hardiness Zone 9a. The average last spring frost is April 12 and first fall frost is November 4.

🌱

Your Clatsop County Garden Planner — Free

A 24-page printable planner built for Clatsop County (Zone 9a). 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 Clatsop County, OR. 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.