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When to plant Persimmon in Madison County, ID

Madison County's short 103-day growing season means one Persimmon planting between June 21 and July 5. No fall crop in Zone 5a.

When to Plant Persimmon in Madison County, ID

Madison County, Idaho Zone 5a July

This month in Madison County, Idaho

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

Avg. last frost May 31
Avg. first frost September 11
Soil temp (4") 57°F
Watering High
Pest pressure High
Daylight 15 hrs

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Persimmons are ornamental trees producing sweet, honey-flavored fruits in fall. American persimmons are astringent until fully ripe while Asian types can be eaten firm.

Madison County, Idaho is in USDA Zone 5a. The average last spring frost is May 31 and the first fall frost is September 11, giving you a growing season of approximately 103 days.

At an elevation of 6,385 feet, Madison County receives approximately 19 inches of rainfall annually with predominantly loam soil. Summer highs average 85°F, providing good warmth for Persimmon during the growing season. With low rainfall, drip irrigation is essential for growing Persimmon successfully. Mulch heavily to conserve soil moisture.

Madison County, ID (Zone 5a) Short season
103 days
Last Spring Frost May 31
103 growing days
First Fall Frost September 11

Madison County Soil Profile

Soil Type

Loam

Soil pH

6.2-7.8

Drainage

Well Drained

Persimmon Planting Risk Windows

Early Start (70% safe) ✓ Fits season
Transplant: Jun 11
Recommended (50%) ✓ Fits season
Transplant: Jun 21
Safe Start (90%) ✓ Fits season
Transplant: Jul 12

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 Madison County

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

Soil pH

Your soil pH (6.2–7.8) overlaps with Persimmon's range (6.0–7.5), though not a perfect match.

Soil Texture

The loam soil in Madison County is excellent for Persimmon — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.3%). Annual compost additions will help Persimmon.

How to Plant Persimmon

120"
Between Plants
144"
Between Rows

Persimmon Water Budget

Plant needs
1.0″/week
Rainfall provides
0.8″/week
You supply
0.3″/week
Watering frequency Only during dry spells
Season total 248 gal / 100 sq ft
Drought risk

Water stress score is 8/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Persimmon

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

Month Persimmon Needs Rainfall You Supplement Action
Jan 1.1" 0" ❄️ Dormant
Feb 1" 0" ❄️ Dormant
Mar 1.9" 0" ❄️ Dormant
Apr 2.1" 0" ❄️ Dormant
May 4.3" 2.5" 1.8" 💧 Light watering
Jun 4.3" 1.2" 3.1" 🚿 Regular watering
Jul 4.3" 1.6" 2.7" 🚿 Regular watering
Aug 4.3" 2.2" 2.1" 💧 Light watering
Sep 4.3" 1.6" 2.7" 🚿 Regular watering
Oct 1.6" 0" ❄️ Dormant
Nov 1.3" 0" ❄️ Dormant
Dec 1" 0" ❄️ Dormant

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

Persimmon 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.

Persimmon needs ~25,094 GDD — county provides 1,416 GDD May not mature

Persimmon Planting Timeline — Madison County, ID

Persimmon Planting Calendar

Activity When Date Range
Transplant Outdoors June 21 Jun 21 – Jul 5

· 120" apart · Rows 144" apart

Month-by-Month Timeline

MonthActivities
January
February
March
April
May
June Transplant Outdoors
July Transplant Outdoors
August
September
October
November
December

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Only during dry spells

📅 Days to Maturity

1095–2555 days

🧪 Soil pH

Needs 6–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 5a

📆 Growing Season

103 days in Madison County

Growing Tips for Persimmon in Madison County

Direct sow Persimmon outdoors after May 31 in Madison County when soil has warmed and frost danger has passed.

Your 103.0-day growing season in Madison County is tight for Persimmon (1095.0-2555.0 days to maturity). Start indoors and choose early-maturing varieties.

Madison County receives only 19" of rain annually. Persimmon needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.

General growing tips

Choose self-fertile varieties or plant male and female trees. American types must be fully soft-ripe before eating. Asian varieties may be eaten when firm. Minimal pruning needed.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Persimmon in Madison County, ID?

Madison County is in Zone 5a with an average last frost of May 31. Plan your Persimmon planting based on this frost date — see the calendar above for exact timing.

What planting zone is Madison County, ID?

Madison County, Idaho is in USDA Hardiness Zone 5a. The average last spring frost is May 31 and first fall frost is September 11.

When should I plant Persimmon in Madison County, ID?

In Madison County, ID, plant Persimmon after the last frost (around May 31) and before the first frost (around September 11). Best results when soil holds above 50°F.

What growing zone is Madison County, ID for Persimmon?

Madison County sits in USDA Zone 5a. Persimmon grows reliably in zones 4a through 9b, so it's a good fit here.

Can Persimmon grow in Madison County's climate?

Yes — Persimmon grows well in Madison County's temperate climate. Madison County averages a 103-day frost-free season, with last frost around May 31 and first frost around September 11.

🌱

Your Madison County Garden Planner — Free

A 22-page printable planner built for Madison County (Zone 5a). 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 Madison County, ID. Local conditions may vary. Last updated: July 2026.

Sources & credits

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