Blog

When to plant Edamame in Trinity County County,

For Trinity County County, gardeners: plant Edamame April 26 through May 17 once soil reads 50°F.

When to Plant Edamame in Trinity County, CA

Trinity County, California Zone 8b June

Your June game plan for Trinity County, California

Your garden in Trinity County, California is working on a schedule, even when you're not. Here's where you should be this June.

Avg. last frost April 19
Avg. first frost October 25
Soil temp (4") 76°F
Watering Critical
Pest pressure High
Daylight 14.9 hrs
Before July arrives, get these ready
  • First harvests: edamame

Instant PDF download. No spam, unsubscribe any time.

Edamame are soybeans harvested at the immature green stage for a sweet, nutty snack. They are high in protein and easy to grow in warm climates.

Trinity County, California is in USDA Zone 8b. The average last spring frost is April 19 and the first fall frost is October 25, giving you a growing season of approximately 189 days.

At an elevation of 61 feet, Trinity County receives approximately 30.9 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 79°F, so choose short-season varieties of Edamame to ensure they mature before fall. Sandy soil warms quickly in spring — great for early planting — but Edamame will need more frequent watering and organic matter to retain nutrients.

Trinity County, CA (Zone 8b) Moderate season
189 days
Last Spring Frost April 19
189 growing days
First Fall Frost October 25
Share this guide:

Trinity County Soil Profile

Soil Type

Sandy Loam

Soil pH

6-7.1

Drainage

Well Drained

Monthly Watering Guide for Edamame

Edamame needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Edamame Needs Rainfall You Supplement Action
Jan 6.2" 0" ❄️ Dormant
Feb 6.6" 0" ❄️ Dormant
Mar 5" 0" ❄️ Dormant
Apr 4.3" 2.7" 1.6" 💧 Light watering
May 4.3" 0.9" 3.4" 🚿 Regular watering
Jun 4.3" 0.1" 4.2" 🚿 Regular watering
Jul 4.3" 0" 4.3" 🚿 Regular watering
Aug 4.3" 0" 4.3" 🚿 Regular watering
Sep 4.3" 0.3" 4" 🚿 Regular watering
Oct 4.3" 1.2" 3.1" 🚿 Regular watering
Nov 2.9" 0" ❄️ Dormant
Dec 4.9" 0" ❄️ Dormant

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

Edamame Planting Timeline — Trinity County, CA

Edamame Planting Calendar

Activity When Date Range
Direct Sow April 26 Apr 26 – May 17
Harvest July 12 Jul 12 – Aug 23

Plant 1" deep · 15" apart · Rows 24" apart

Month-by-Month Timeline

MonthActivities
January
February
March
April Direct Sow
May Direct Sow
June
July Harvest
August Harvest
September
October
November
December
Share this guide:

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

Moderate — regular watering

📅 Days to Maturity

75–100 days

🧪 Soil pH

Needs 6–7 · Your soil: N/A

🗺️ USDA Zone

Zone 8b

📆 Growing Season

189 days in Trinity County

Growing Tips for Trinity County

Direct sow after soil is warm. Do not over-fertilize with nitrogen. Harvest when pods are plump and bright green but before they start to yellow. Steam or boil pods before eating.

Companion Planting

Good Companions

Avoid Planting Near

  • Onion
  • Garlic

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Edamame in Trinity County, CA?

Trinity County is in Zone 8b with an average last frost of April 19. Plan your Edamame planting based on this frost date — see the calendar above for exact timing.

What planting zone is Trinity County, CA?

Trinity County, California is in USDA Hardiness Zone 8b. The average last spring frost is April 19 and first fall frost is October 25.

When should I plant Edamame in Trinity County, ?

In Trinity County, , plant Edamame after the last frost (around April 19) and before the first frost (around October 25). Best results when soil holds above 50°F.

What growing zone is Trinity County, for Edamame?

Trinity County sits in USDA Zone 8b. Edamame grows reliably in zones 3a through 10b, so it's a good fit here.

Can Edamame grow in Trinity County's climate?

Yes — Edamame grows well in Trinity County's temperate climate. Trinity County averages a 189-day frost-free season, with last frost around April 19 and first frost around October 25.

🌱

Your Trinity County Garden Planner — Free

A 22-page printable planner built for Trinity County (Zone 8b). 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 Trinity County, CA. 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.