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When to Plant Ginger in Pierce County, WA

Pierce County, Washington Zone 8b May

Your May game plan for Pierce County, Washington

May rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Pierce County, Washington.

Avg. last frost April 13
Avg. first frost October 30
Soil temp (4") 70°F
Watering Moderate
Pest pressure High
Daylight 14.9 hrs
June will be here before you know it — start on
  • Starting indoors: ginger

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Ginger is a tropical plant grown for its pungent, spicy rhizome used worldwide in cooking and medicine. It requires a long, warm, humid growing season.

Pierce County, Washington is in USDA Zone 8b. The average last spring frost is April 13 and the first fall frost is October 30, giving you a growing season of approximately 200 days.

At an elevation of 168 feet, Pierce County receives approximately 48.9 inches of rainfall annually with predominantly silt loam soil. Summer highs average 83°F, so choose short-season varieties of Ginger to ensure they mature before fall.

Pierce County, WA (Zone 8b) Long season
200 days
Last Spring Frost April 13
200 growing days
First Fall Frost October 30

Pierce County Soil Profile

Soil Type

Silt Loam

Soil pH

5.4-6.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (284 days to spare)
Start indoors: Feb 14 Transplant: Apr 18 🍅 Harvest: Dec 19 – Jan 2
Recommended (50%) ✓ Fits season (292 days to spare)
Start indoors: Feb 23 Transplant: Apr 27 🍅 Harvest: Dec 28 – Jan 11
Safe Start (90%) ✓ Fits season (284 days to spare)
Start indoors: Mar 28 Transplant: May 30 🍅 Harvest: Jan 30 – Feb 13

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 Pierce County

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

Soil pH

Your soil pH (5.4–6.2) overlaps with Ginger's range (5.5–6.5), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is excellent (4.4%) — Ginger will thrive.

How to Plant Ginger

0.5"
Planting Depth
6"
Between Plants
12"
Between Rows

Plant Water Budget

Plant needs
1.5″/week
Rainfall provides
1.0″/week
You supply
0.5″/week
Watering frequency 1-2 times/week
Season total 842 gal / 100 sq ft

Monthly Watering Guide for Ginger

Ginger needs approximately 1.5 inches of water per week (6.5" per month). Here's how your county's rainfall compares month by month.

Month Ginger Needs Rainfall You Supplement Action
Jan 6.8" 0" ❄️ Dormant
Feb 5.7" 0" ❄️ Dormant
Mar 4.4" 0" ❄️ Dormant
Apr 6.5" 4.1" 2.4" 💧 Light watering
May 6.5" 2.8" 3.7" 🚿 Regular watering
Jun 6.5" 2" 4.5" 🚿 Regular watering
Jul 6.5" 0.9" 5.6" 🚿 Regular watering
Aug 6.5" 0.9" 5.6" 🚿 Regular watering
Sep 6.5" 2" 4.5" 🚿 Regular watering
Oct 6.5" 4.7" 1.8" 💧 Light watering
Nov 7.8" 0" ❄️ Dormant
Dec 6.8" 0" ❄️ Dormant

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

Ginger 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.

Ginger needs ~3,308 GDD — county provides 2,450 GDD May not mature

Ginger Planting Timeline — Pierce County, WA

Ginger Planting Calendar

Activity When Date Range
Start Indoors February 23 Feb 23 – Mar 9
Transplant Outdoors April 27 Apr 27 – May 11
Direct Sow April 20 Apr 20 – May 11
Harvest December 28 Dec 28 – Jan 11

Plant 0.5" deep · 6" apart · Rows 12" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

1.5"/week · 1-2 times/week

📅 Days to Maturity

240–300 days

🧪 Soil pH

Needs 5.5–6.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 8b

📆 Growing Season

200 days in Pierce County

Growing Tips for Ginger in Pierce County

Direct sow Ginger outdoors after April 13 in Pierce County when soil has warmed and frost danger has passed.

Your 200.0-day growing season in Pierce County is tight for Ginger (240.0-300.0 days to maturity). Start indoors and choose early-maturing varieties.

General growing tips

Plant rhizome pieces with buds 2 inches deep in spring. Keep soil consistently moist but not waterlogged. In cold climates, grow in containers and bring indoors before frost.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Ginger in Pierce County, WA?

Pierce County is in Zone 8b with an average last frost of April 13. Plan your Ginger planting based on this frost date — see the calendar above for exact timing.

What planting zone is Pierce County, WA?

Pierce County, Washington is in USDA Hardiness Zone 8b. The average last spring frost is April 13 and first fall frost is October 30.

🌱

Your Pierce County Garden Planner — Free

A 24-page printable planner built for Pierce 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.

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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 Pierce County, WA. 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.