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When to Plant Jicama in Prince of Wales-Hyder, AK

Prince of Wales-Hyder, Alaska Zone 8a May

Top priorities for Prince of Wales-Hyder, Alaska gardeners in May

May is a pivotal month for Prince of Wales-Hyder, Alaska gardens. Focus on these tasks first and you'll set up the rest of the season for success.

Avg. last frost April 13
Avg. first frost November 1
Soil temp (4") 66°F
Watering Critical
Pest pressure Moderate
Daylight 16 hrs
June prep starts now
  • Starting indoors: jicama

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Jicama is a tropical legume grown for its crisp, sweet, starchy root. It requires a very long, warm growing season but produces a refreshing, water chestnut-like tuber.

Prince of Wales-Hyder, Alaska is in USDA Zone 8a. The average last spring frost is April 13 and the first fall frost is November 1, giving you a growing season of approximately 202 days.

At an elevation of 257 feet, Prince of Wales-Hyder receives approximately 14.4 inches of rainfall annually with predominantly silt loam soil. Summer highs average 70°F, so choose short-season varieties of Jicama to ensure they mature before fall. With low rainfall, drip irrigation is essential for growing Jicama successfully. Mulch heavily to conserve soil moisture.

Prince of Wales-Hyder, AK (Zone 8a) Long season
202 days
Last Spring Frost April 13
202 growing days
First Fall Frost November 1

Prince of Wales-Hyder Soil Profile

Soil Type

Silt Loam

Soil pH

5.2-6.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Start indoors: Feb 20 Transplant: Apr 24 🍅 Harvest: Aug 28 – Nov 6
Recommended (50%) ✗ May not fit
Start indoors: Feb 23 Transplant: Apr 27 🍅 Harvest: Aug 31 – Nov 9
Safe Start (90%) ✓ Fits season (2 days to spare)
Start indoors: Mar 13 Transplant: May 15 🍅 Harvest: Sep 18 – Nov 27

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 Prince of Wales-Hyder

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

Soil pH

Your soil pH (5.2–6.8) overlaps with Jicama's range (6.0–7.5), though not a perfect match.

Soil Texture

The silt loam soil in Prince of Wales-Hyder is excellent for Jicama — good drainage, moisture retention, and nutrient holding capacity.

Drainage

Drainage is adequate for Jicama.

Organic Matter

Organic matter is excellent (6.0%) — Jicama will thrive.

How to Plant Jicama

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

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.3″/week
You supply
0.4″/week
Watering frequency 1-2 times/week
Season total 720 gal / 100 sq ft

Monthly Watering Guide for Jicama

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

Month Jicama Needs Rainfall You Supplement Action
Jan 0.8" 0" ❄️ Dormant
Feb 0.7" 0" ❄️ Dormant
Mar 0.6" 0" ❄️ Dormant
Apr 4.3" 0.4" 3.9" 🚿 Regular watering
May 4.3" 0.7" 3.6" 🚿 Regular watering
Jun 4.3" 1" 3.3" 🚿 Regular watering
Jul 4.3" 1.6" 2.7" 🚿 Regular watering
Aug 4.3" 1.9" 2.4" 🚿 Regular watering
Sep 4.3" 2.8" 1.5" 💧 Light watering
Oct 4.3" 1.7" 2.6" 🚿 Regular watering
Nov 4.3" 1.1" 3.2" 🚿 Regular watering
Dec 0.9" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Nov in Prince of Wales-Hyder). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Jicama 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.

Jicama needs ~375 GDD — county provides 505 GDD Excellent fit

Jicama Planting Timeline — Prince of Wales-Hyder, AK

Jicama 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 August 31 Aug 31 – Nov 9

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · 1-2 times/week

📅 Days to Maturity

120–180 days

🧪 Soil pH

Needs 6–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 8a

📆 Growing Season

202 days in Prince of Wales-Hyder

Growing Tips for Jicama in Prince of Wales-Hyder

Direct sow Jicama outdoors after April 13 in Prince of Wales-Hyder when soil has warmed and frost danger has passed.

Common pests for Jicama in this region include bean beetles and aphids. Use row covers early in the season and inspect plants weekly.

Prince of Wales-Hyder receives only 14" of rain annually. Jicama needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.

General growing tips

Start seeds indoors 8-10 weeks before last frost. Pinch off flowers to direct energy to root development. Harvest before first frost when roots are 3-6 inches across.

Companion Planting

Good Companions

Avoid Planting Near

  • Fennel

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Jicama in Prince of Wales-Hyder, AK?

Prince of Wales-Hyder is in Zone 8a with an average last frost of April 13. Plan your Jicama planting based on this frost date — see the calendar above for exact timing.

What planting zone is Prince of Wales-Hyder, AK?

Prince of Wales-Hyder, Alaska is in USDA Hardiness Zone 8a. The average last spring frost is April 13 and first fall frost is November 1.

🌱

Your Prince of Wales-Hyder Garden Planner — Free

A 24-page printable planner built for Prince of Wales-Hyder (Zone 8a). 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 Prince of Wales-Hyder, AK. 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.