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When to Plant Jicama in Lake County, OH

Lake County, Ohio Zone 7a May

Lake County, Ohio gardeners: here's your May plan

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

Avg. last frost May 5
Avg. first frost October 13
Soil temp (4") 62°F
Watering Low
Pest pressure Low
Daylight 14.4 hrs
  1. Move jicama into the garden

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

  2. Sow jicama where they'll grow

    These tolerate cool soil, so you're not gambling by sowing now.

June will be here before you know it — start on
  • 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.

Lake County, Ohio is in USDA Zone 7a. The average last spring frost is May 5 and the first fall frost is October 13, giving you a growing season of approximately 161 days.

At an elevation of 740 feet, Lake County receives approximately 35.8 inches of rainfall annually with predominantly silt loam soil. Summer highs average 87°F, providing good warmth for Jicama during the growing season.

Lake County, OH (Zone 7a) Moderate season
161 days
Last Spring Frost May 5
161 growing days
First Fall Frost October 13

Lake County Soil Profile

Soil Type

Silt Loam

Soil pH

6.3-7.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Start indoors: Mar 11 Transplant: May 13 🍅 Harvest: Sep 16 – Nov 25
Recommended (50%) ✗ May not fit
Start indoors: Mar 17 Transplant: May 19 🍅 Harvest: Sep 22 – Dec 1
Safe Start (90%) ✗ May not fit
Start indoors: Apr 3 Transplant: Jun 5 🍅 Harvest: Oct 9 – Dec 18

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 Lake County

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

Soil pH

Your soil pH (6.3–7.2) is within Jicama's preferred range (6.0–7.5).

Soil Texture

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

Organic Matter

Organic matter is excellent (5.0%) — 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
0.9″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 95 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 1.7" 0" ❄️ Dormant
Feb 1.4" 0" ❄️ Dormant
Mar 2.6" 0" ❄️ Dormant
Apr 3.9" 0" ❄️ Dormant
May 4.3" 3.9" 0.4" 💧 Light watering
Jun 4.3" 4.8" 0" ✅ Rainfall sufficient
Jul 4.3" 4.1" 0.2" 💧 Light watering
Aug 4.3" 3.7" 0.6" 💧 Light watering
Sep 4.3" 3.1" 1.2" 💧 Light watering
Oct 4.3" 2.5" 1.8" 💧 Light watering
Nov 2.3" 0" ❄️ Dormant
Dec 1.8" 0" ❄️ Dormant

Water needs are for active growing months only (May–Oct in Lake County). 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 ~2,288 GDD — county provides 2,455 GDD Good fit

Jicama Planting Timeline — Lake County, OH

Jicama Planting Calendar

Activity When Date Range
Start Indoors March 17 Mar 17 – Mar 31
Transplant Outdoors May 19 May 19 – Jun 2
Direct Sow May 12 May 12 – Jun 2
Harvest September 22 Sep 22 – Dec 1

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Only during dry spells

📅 Days to Maturity

120–180 days

🧪 Soil pH

Needs 6–7.5 · Your soil: ideal

🗺️ USDA Zone

Zone 7a

📆 Growing Season

161 days in Lake County

Growing Tips for Jicama in Lake County

Direct sow Jicama outdoors after May 05 in Lake County when soil has warmed and frost danger has passed.

Your 161.0-day growing season in Lake County is tight for Jicama (120.0-180.0 days to maturity). Start indoors and choose early-maturing varieties.

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

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 Lake County, OH?

Lake County is in Zone 7a with an average last frost of May 5. Plan your Jicama planting based on this frost date — see the calendar above for exact timing.

What planting zone is Lake County, OH?

Lake County, Ohio is in USDA Hardiness Zone 7a. The average last spring frost is May 5 and first fall frost is October 13.

🌱

Your Lake County Garden Planner — Free

A 24-page printable planner built for Lake County (Zone 7a). 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 Lake County, OH. 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.