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When to plant Raspberries in Trimble County, KY

Trimble County sits in cold Zone 6b. Plant Raspberries May 1–May 15 for the single annual harvest; the October 22 first frost closes the window.

When to Plant Raspberries in Trimble County, KY

Raspberries
Trimble County, Kentucky Zone 6b June

Your June gardening checklist

We've pulled the most time-sensitive tasks for Trimble County, Kentucky this June and put them front and centre. Tackle them in order.

Avg. last frost April 10
Avg. first frost October 22
Soil temp (4") 64°F
Watering Low
Pest pressure High
Daylight 14.7 hrs

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Raspberries are beloved bramble fruits producing sweet, delicate berries in red, golden, black, and purple varieties. They spread by underground runners and are very productive.

Trimble County, Kentucky is in USDA Zone 6b. The average last spring frost is April 10 and the first fall frost is October 22, giving you a growing season of approximately 195 days.

At an elevation of 3,539 feet, Trimble County receives approximately 52.7 inches of rainfall annually with predominantly silt loam soil. Summer highs average 85°F, providing good warmth for Raspberries during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Raspberries root diseases.

Trimble County, KY (Zone 6b) Moderate season
195 days
Last Spring Frost April 10
195 growing days
First Fall Frost October 22

Trimble County Soil Profile

Soil Type

Silt Loam

Soil pH

5.5-6.7

Drainage

Well Drained

Raspberries Planting Risk Windows

Early Start (70% safe) ✓ Fits season
Transplant: Apr 25
Recommended (50%) ✓ Fits season
Transplant: May 1
Safe Start (90%) ✓ Fits season
Transplant: May 21

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 Trimble County

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

Soil pH

Your soil pH (5.5–6.7) overlaps with Raspberries's range (5.5–6.5), though not a perfect match.

Soil Texture

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

Organic Matter

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

How to Plant Raspberries

24"
Between Plants
72"
Between Rows

Raspberries Water Budget

Plant needs
1.0″/week
Rainfall provides
1.1″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

Monthly Watering Guide for Raspberries

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

Month Raspberries Needs Rainfall You Supplement Action
Jan 4.5" 0" ❄️ Dormant
Feb 4.9" 0" ❄️ Dormant
Mar 5.1" 0" ❄️ Dormant
Apr 4.3" 3.8" 0.5" 💧 Light watering
May 4.3" 3.7" 0.6" 💧 Light watering
Jun 4.3" 4.4" 0" ✅ Rainfall sufficient
Jul 4.3" 5.7" 0" ✅ Rainfall sufficient
Aug 4.3" 5.2" 0" ✅ Rainfall sufficient
Sep 4.3" 4.2" 0.1" 💧 Light watering
Oct 4.3" 3.2" 1.1" 💧 Light watering
Nov 3.9" 0" ❄️ Dormant
Dec 4.1" 0" ❄️ Dormant

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

Raspberries 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.

Raspberries needs ~7,528 GDD — county provides 2,681 GDD May not mature

Raspberries Planting Timeline — Trimble County, KY

Raspberries Planting Calendar

Activity When Date Range
Transplant Outdoors May 1 May 1 – May 15

· 24" apart · Rows 72" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Natural rainfall sufficient

📅 Days to Maturity

365–730 days

🧪 Soil pH

Needs 5.5–6.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 6b

📆 Growing Season

195 days in Trimble County

Growing Tips for Raspberries in Trimble County

Direct sow Raspberries outdoors after April 10 in Trimble County when soil has warmed and frost danger has passed.

Your 195.0-day growing season in Trimble County is tight for Raspberries (365.0-730.0 days to maturity). Start indoors and choose early-maturing varieties.

General growing tips

Provide a trellis for support. Prune summer-bearing types by removing spent canes after harvest. For ever-bearing types, mow all canes in late winter for a single fall crop.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes
  • Tomatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Raspberries in Trimble County, KY?

Trimble County is in Zone 6b with an average last frost of April 10. Plan your Raspberries planting based on this frost date — see the calendar above for exact timing.

What planting zone is Trimble County, KY?

Trimble County, Kentucky is in USDA Hardiness Zone 6b. The average last spring frost is April 10 and first fall frost is October 22.

When should I plant Raspberries in Trimble County, KY?

In Trimble County, KY, plant Raspberries after the last frost (around April 10) and before the first frost (around October 22). Best results when soil holds above 50°F.

What growing zone is Trimble County, KY for Raspberries?

Trimble County sits in USDA Zone 6b. Raspberries grows reliably in zones 3a through 9b, so it's a good fit here.

Can Raspberries grow in Trimble County's climate?

Yes — Raspberries grows well in Trimble County's temperate climate. Trimble County averages a 195-day frost-free season, with last frost around April 10 and first frost around October 22.

🌱

Your Trimble County Garden Planner — Free

A 22-page printable planner built for Trimble 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 Trimble County, KY. Local conditions may vary. Last updated: June 2026.

Sources & credits

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