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When to plant Sweet Potatoes in Gooding County County,

Gooding County County sits in USDA Zone 7a. Plant Sweet Potatoes between May 10 (after last frost on May 3) and May 31.

When to Plant Sweet Potatoes in Gooding County, ID

Gooding County, Idaho Zone 7a June

Your June game plan for Gooding County, Idaho

June is a pivotal month for Gooding County, Idaho gardens. Focus on these tasks first and you'll set up the rest of the season for success.

Avg. last frost May 3
Avg. first frost October 3
Soil temp (4") 52°F
Watering Critical
Pest pressure High
Daylight 15.2 hrs
  1. Get sweet potatoes seeds going inside

    Bottom-water once the first true leaves appear — it keeps stems dry and knocks back damping-off.

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Sweet potatoes are a warm-season root crop that produces nutritious, sweet tubers in orange, white, and purple varieties. They need a long, hot growing season.

Gooding County, Idaho is in USDA Zone 7a. The average last spring frost is May 3 and the first fall frost is October 3, giving you a growing season of approximately 153 days.

At an elevation of 5,631 feet, Gooding County receives approximately 16.6 inches of rainfall annually with predominantly loam soil. Summer highs average 87°F, providing good warmth for Sweet Potatoes during the growing season. With low rainfall, drip irrigation is essential for growing Sweet Potatoes successfully. Mulch heavily to conserve soil moisture.

Gooding County, ID (Zone 7a) Moderate season
153 days
Last Spring Frost May 3
153 growing days
First Fall Frost October 3

Gooding County Soil Profile

Soil Type

Loam

Soil pH

6.5-8.2

Drainage

Well Drained

Sweet Potatoes Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Start indoors: Mar 11 Transplant: May 13 🍅 Harvest: Aug 12 – Sep 30
Recommended (50%) ✗ May not fit
Start indoors: Mar 15 Transplant: May 17 🍅 Harvest: Aug 16 – Oct 4
Safe Start (90%) ✗ May not fit
Start indoors: Apr 13 Transplant: Jun 15 🍅 Harvest: Sep 14 – Nov 2

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 Gooding County

How your county's soil matches Sweet Potatoes's growing requirements.

Soil pH

Your soil pH (6.5–8.2) is more alkaline than Sweet Potatoes prefers (5.5–6.5). Add sulfur or peat moss to lower pH.

Soil Texture

The loam soil in Gooding County is excellent for Sweet Potatoes — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.5%). Annual compost additions will help Sweet Potatoes.

How to Plant Sweet Potatoes

1"
Planting Depth
15"
Between Plants
24"
Between Rows

Sweet Potatoes Water Budget

Plant needs
1.0″/week
Rainfall provides
0.5″/week
You supply
0.7″/week
Watering frequency 1-2 times/week
Season total 889 gal / 100 sq ft
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Sweet Potatoes

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

Month Sweet Potatoes Needs Rainfall You Supplement Action
Jan 1.2" 0" ❄️ Dormant
Feb 0.9" 0" ❄️ Dormant
Mar 1.4" 0" ❄️ Dormant
Apr 2" 0" ❄️ Dormant
May 4.3" 2.2" 2.1" 💧 Light watering
Jun 4.3" 1.1" 3.2" 🚿 Regular watering
Jul 4.3" 1.6" 2.7" 🚿 Regular watering
Aug 4.3" 1.6" 2.7" 🚿 Regular watering
Sep 4.3" 1.2" 3.1" 🚿 Regular watering
Oct 4.3" 1.5" 2.8" 🚿 Regular watering
Nov 1.1" 0" ❄️ Dormant
Dec 1" 0" ❄️ Dormant

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

Sweet Potatoes 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.

Sweet Potatoes needs ~1,601 GDD — county provides 2,333 GDD Excellent fit

Sweet Potatoes Planting Timeline — Gooding County, ID

Sweet Potatoes Planting Calendar

Activity When Date Range
Start Indoors March 15 Mar 15 – Mar 29
Transplant Outdoors May 17 May 17 – May 31
Direct Sow May 10 May 10 – May 31
Harvest August 16 Aug 16 – Oct 4

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · 1-2 times/week

📅 Days to Maturity

90–120 days

🧪 Soil pH

Needs 5.5–6.5 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 7a

📆 Growing Season

153 days in Gooding County

Growing Tips for Sweet Potatoes in Gooding County

Direct sow Sweet Potatoes outdoors after May 03 in Gooding County when soil has warmed and frost danger has passed.

Gooding County receives only 17" of rain annually. Sweet Potatoes needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.

General growing tips

Plant slips (rooted sprouts) after soil is thoroughly warm. Build raised mounds for better root development. Cure harvested roots at 80-85F for 10 days to develop sweetness.

Companion Planting

Good Companions

Avoid Planting Near

  • Squash Summer

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Sweet Potatoes in Gooding County, ID?

Gooding County is in Zone 7a with an average last frost of May 3. Plan your Sweet Potatoes planting based on this frost date — see the calendar above for exact timing.

What planting zone is Gooding County, ID?

Gooding County, Idaho is in USDA Hardiness Zone 7a. The average last spring frost is May 3 and first fall frost is October 3.

When should I plant Sweet Potatoes in Gooding County County, ?

In Gooding County County, , plant Sweet Potatoes after the last frost (around May 3) and before the first frost (around October 3). Best results when soil holds above 50°F.

What growing zone is Gooding County County, for Sweet Potatoes?

Gooding County County sits in USDA Zone 7a. Sweet Potatoes grows reliably in zones 5a through 11b, so it's a good fit here.

Can Sweet Potatoes grow in Gooding County County's climate?

Yes — Sweet Potatoes grows well in Gooding County County's temperate climate. Gooding County County averages a 153-day frost-free season, with last frost around May 3 and first frost around October 3.

🌱

Your Gooding County Garden Planner — Free

A 22-page printable planner built for Gooding 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 Gooding County, ID. 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.