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When to Plant Epazote in Jackson County, SD

Jackson County, South Dakota Zone 5a May

May in the garden — Jackson County, South Dakota

Your garden in Jackson County, South Dakota is working on a schedule, even when you're not. Here's where you should be this May.

Avg. last frost May 14
Avg. first frost September 28
Soil temp (4") 55°F
Watering High
Pest pressure Low
Daylight 14.5 hrs
  1. Transplant epazote outside

    Pick a cloudy afternoon or evening to plant. Less transplant shock, and your seedlings will barely blink.

  2. Plant epazote from seed, right in the garden

    Keep the top inch of soil moist until germination — a gentle morning watering for 5–7 days does the job.

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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.

Jackson County, South Dakota is in USDA Zone 5a. The average last spring frost is May 14 and the first fall frost is September 28, giving you a growing season of approximately 137 days.

At an elevation of 1,001 feet, Jackson County receives approximately 20.1 inches of rainfall annually with predominantly loam soil. Summer highs average 80°F, so choose short-season varieties of Epazote to ensure they mature before fall.

Jackson County, SD (Zone 5a) Short season
137 days
Last Spring Frost May 14
137 growing days
First Fall Frost September 28

Jackson County Soil Profile

Soil Type

Loam

Soil pH

6.4-7.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (16 days to spare)
Start indoors: Mar 21 Transplant: May 23 🍅 Harvest: Jul 11 – Sep 5
Recommended (50%) ✓ Fits season (18 days to spare)
Start indoors: Mar 26 Transplant: May 28 🍅 Harvest: Jul 16 – Sep 10
Safe Start (90%) ✓ Fits season (15 days to spare)
Start indoors: Apr 7 Transplant: Jun 9 🍅 Harvest: Jul 28 – Sep 22

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 Jackson County

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

Soil pH

Your soil pH (6.4–7.8) is within Epazote's preferred range (6.0–8.0).

Soil Texture

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

Organic Matter

Organic matter is moderate (3.8%). Annual compost additions will help Epazote.

How to Plant Epazote

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

Succession Planting Epazote

3
successive plantings in your 137-day season

Sow every 5.1 weeks. Last sowing by Jul 30 to harvest before frost.

Plant Water Budget

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

Water stress score is 8/10 — 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 1.4" 0" ❄️ Dormant
Feb 1" 0" ❄️ Dormant
Mar 1.9" 0" ❄️ Dormant
Apr 2.3" 0" ❄️ Dormant
May 2.2" 2.4" 0" ✅ Rainfall sufficient
Jun 2.2" 1.5" 0.7" 💧 Light watering
Jul 2.2" 1.9" 0.3" 💧 Light watering
Aug 2.2" 1.9" 0.3" 💧 Light watering
Sep 2.2" 1.6" 0.6" 💧 Light watering
Oct 1.7" 0" ❄️ Dormant
Nov 1.2" 0" ❄️ Dormant
Dec 1.2" 0" ❄️ Dormant

Water needs are for active growing months only (May–Sep in Jackson 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 ~525 GDD — county provides 1,370 GDD Excellent fit

Epazote Planting Timeline — Jackson County, SD

Epazote Planting Calendar

Activity When Date Range
Start Indoors March 26 Mar 26 – Apr 9
Transplant Outdoors May 28 May 28 – Jun 11
Direct Sow May 21 May 21 – Jun 11
Harvest July 16 Jul 16 – Sep 10

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

Month-by-Month Timeline

MonthActivities
January
February
March Start Indoors
April Start Indoors
May Transplant Outdoors Direct Sow
June Transplant Outdoors Direct Sow
July Harvest
August Harvest
September Harvest
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: ideal

🗺️ USDA Zone

Zone 5a

📆 Growing Season

137 days in Jackson County

Growing Tips for Epazote in Jackson County

Direct sow Epazote outdoors after May 14 in Jackson County when soil has warmed and frost danger has passed.

Jackson County receives only 20" 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 →

Frequently Asked Questions

When should I plant Epazote in Jackson County, SD?

Jackson County is in Zone 5a with an average last frost of May 14. Plan your Epazote planting based on this frost date — see the calendar above for exact timing.

What planting zone is Jackson County, SD?

Jackson County, South Dakota is in USDA Hardiness Zone 5a. The average last spring frost is May 14 and first fall frost is September 28.

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Your Jackson County Garden Planner — Free

A 24-page printable planner built for Jackson County (Zone 5a). 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 Jackson County, SD. Local conditions may vary. Last updated: May 2026.

Sources & credits

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