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When to Plant Mulberries in Fayette County, IL

Fayette County, Illinois Zone 6b May

May to-do list for Fayette County, Illinois

Each item below is timed to Fayette County, Illinois's frost dates and soil temperatures. Skip nothing, stress about nothing.

Avg. last frost April 12
Avg. first frost October 18
Soil temp (4") 63°F
Watering Low
Pest pressure Low
Daylight 14.1 hrs
  1. Get mulberries in the ground

    Pinch off the lowest leaves on each seedling before you plant — it reduces water loss while the roots catch up.

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Mulberries are fast-growing, long-lived trees that produce abundant sweet-tart berries over an extended harvest period. The berries resemble elongated blackberries.

Fayette County, Illinois is in USDA Zone 6b. The average last spring frost is April 12 and the first fall frost is October 18, giving you a growing season of approximately 189 days.

At an elevation of 854 feet, Fayette County receives approximately 40.6 inches of rainfall annually with predominantly silt loam soil. Summer highs average 90°F, providing good warmth for Mulberries during the growing season.

Fayette County, IL (Zone 6b) Moderate season
189 days
Last Spring Frost April 12
189 growing days
First Fall Frost October 18
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Fayette County Soil Profile

Soil Type

Silt Loam

Soil pH

6.1-7.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season
Transplant: Apr 27
Recommended (50%) ✓ Fits season
Transplant: May 3
Safe Start (90%) ✓ Fits season
Transplant: May 14

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 Fayette County

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

Soil pH

Your soil pH (6.1–7.2) overlaps with Mulberries's range (5.5–7.0), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is excellent (4.2%) — Mulberries will thrive.

How to Plant Mulberries

120"
Between Plants
144"
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 197 gal / 100 sq ft
Drought risk

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

Monthly Watering Guide for Mulberries

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

Month Mulberries Needs Rainfall You Supplement Action
Jan 1.8" 0" ❄️ Dormant
Feb 1.9" 0" ❄️ Dormant
Mar 2.5" 0" ❄️ Dormant
Apr 4.3" 4.2" 0.1" 💧 Light watering
May 4.3" 4.8" 0" ✅ Rainfall sufficient
Jun 4.3" 5.3" 0" ✅ Rainfall sufficient
Jul 4.3" 3.9" 0.4" 💧 Light watering
Aug 4.3" 4.4" 0" ✅ Rainfall sufficient
Sep 4.3" 3.9" 0.4" 💧 Light watering
Oct 4.3" 2.9" 1.4" 💧 Light watering
Nov 2.7" 0" ❄️ Dormant
Dec 2.2" 0" ❄️ Dormant

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

Mulberries 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.

Mulberries needs ~22,356 GDD — county provides 3,307 GDD May not mature

Mulberries Planting Timeline — Fayette County, IL

Mulberries Planting Calendar

Activity When Date Range
Transplant Outdoors May 3 May 3 – May 17

· 120" apart · Rows 144" apart

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Only during dry spells

📅 Days to Maturity

730–1825 days

🧪 Soil pH

Needs 5.5–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 6b

📆 Growing Season

189 days in Fayette County

Growing Tips for Mulberries in Fayette County

Direct sow Mulberries outdoors after April 12 in Fayette County when soil has warmed and frost danger has passed.

Your 189.0-day growing season in Fayette County is tight for Mulberries (730.0-1825.0 days to maturity). Start indoors and choose early-maturing varieties.

General growing tips

Plant away from driveways and patios as fallen berries stain. Minimal pruning is needed. Harvest by shaking branches over a tarp. Birds love mulberries so plant extra.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Mulberries in Fayette County, IL?

Fayette County is in Zone 6b with an average last frost of April 12. Plan your Mulberries planting based on this frost date — see the calendar above for exact timing.

What planting zone is Fayette County, IL?

Fayette County, Illinois is in USDA Hardiness Zone 6b. The average last spring frost is April 12 and first fall frost is October 18.

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Your Fayette County Garden Planner — Free

A 24-page printable planner built for Fayette County (Zone 6b). 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 Fayette County, IL. 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.