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When to Plant Elderberries in Monroe County, OH

Monroe County, Ohio Zone 6b May

May in Monroe County, Ohio — your action list

Your garden in Monroe County, Ohio is working on a schedule, even when you're not. Here's where you should be this May.

Avg. last frost April 27
Avg. first frost October 20
Soil temp (4") 62°F
Watering Moderate
Pest pressure Low
Daylight 14.2 hrs
  1. Transplant elderberries outside

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

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Elderberries are fast-growing shrubs or small trees producing clusters of small, dark berries used for syrups, wines, and immune-boosting preparations. The flowers are also edible.

Monroe County, Ohio is in USDA Zone 6b. The average last spring frost is April 27 and the first fall frost is October 20, giving you a growing season of approximately 176 days.

At an elevation of 567 feet, Monroe County receives approximately 31.9 inches of rainfall annually with predominantly silt loam soil. Summer highs average 85°F, providing good warmth for Elderberries during the growing season.

Monroe County, OH (Zone 6b) Moderate season
176 days
Last Spring Frost April 27
176 growing days
First Fall Frost October 20
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Monroe County Soil Profile

Soil Type

Silt Loam

Soil pH

5.8-6.9

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season
Transplant: May 13
Recommended (50%) ✓ Fits season
Transplant: May 18
Safe Start (90%) ✓ Fits season
Transplant: Jun 6

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 Monroe County

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

Soil pH

Your soil pH (5.8–6.9) overlaps with Elderberries's range (5.5–6.5), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (4.0%). Annual compost additions will help Elderberries.

How to Plant Elderberries

120"
Between Plants
144"
Between Rows

Plant Water Budget

Plant needs
0.8″/week
Rainfall provides
0.8″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 73 gal / 100 sq ft
Drought risk

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

Monthly Watering Guide for Elderberries

Elderberries needs approximately 0.8 inches of water per week (3.5" per month). Here's how your county's rainfall compares month by month.

Month Elderberries Needs Rainfall You Supplement Action
Jan 1.1" 0" ❄️ Dormant
Feb 1.5" 0" ❄️ Dormant
Mar 2.1" 0" ❄️ Dormant
Apr 3.5" 3.3" 0.2" 💧 Light watering
May 3.5" 3.4" 0.1" 💧 Light watering
Jun 3.5" 3.9" 0" ✅ Rainfall sufficient
Jul 3.5" 3.9" 0" ✅ Rainfall sufficient
Aug 3.5" 3.5" 0" ✅ Rainfall sufficient
Sep 3.5" 3.1" 0.4" 💧 Light watering
Oct 3.5" 2.7" 0.8" 💧 Light watering
Nov 1.9" 0" ❄️ Dormant
Dec 1.5" 0" ❄️ Dormant

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

Elderberries 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.

Elderberries needs ~12,547 GDD — county provides 2,420 GDD May not mature

Elderberries Planting Timeline — Monroe County, OH

Elderberries Planting Calendar

Activity When Date Range
Transplant Outdoors May 18 May 18 – Jun 1

· 120" apart · Rows 144" apart

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.8"/week · Only during dry spells

📅 Days to Maturity

730–1095 days

🧪 Soil pH

Needs 5.5–6.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 6b

📆 Growing Season

176 days in Monroe County

Growing Tips for Elderberries in Monroe County

Direct sow Elderberries outdoors after April 27 in Monroe County when soil has warmed and frost danger has passed.

Your 176.0-day growing season in Monroe County is tight for Elderberries (730.0-1095.0 days to maturity). Start indoors and choose early-maturing varieties.

General growing tips

Plant at least two varieties for cross-pollination. Prune annually to remove old canes and maintain shape. Berries must be cooked before eating as raw berries are mildly toxic.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Elderberries in Monroe County, OH?

Monroe County is in Zone 6b with an average last frost of April 27. Plan your Elderberries planting based on this frost date — see the calendar above for exact timing.

What planting zone is Monroe County, OH?

Monroe County, Ohio is in USDA Hardiness Zone 6b. The average last spring frost is April 27 and first fall frost is October 20.

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Your Monroe County Garden Planner — Free

A 24-page printable planner built for Monroe 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 Monroe 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.