When to plant Cranberries in Marion County, KY
Marion County sits in cold Zone 7a. Plant Cranberries May 4–May 18 for the single annual harvest; the October 26 first frost closes the window.
When to Plant Cranberries in Marion County, KY
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Cranberries are low-growing, vine-like shrubs that produce tart red berries in fall. They grow in acidic, boggy conditions and are surprisingly easy to cultivate.
Marion County, Kentucky is in USDA Zone 7a. The average last spring frost is April 13 and the first fall frost is October 26, giving you a growing season of approximately 196 days.
At an elevation of 2,021 feet, Marion County receives approximately 41.7 inches of rainfall annually with predominantly silt loam soil. Summer highs average 91°F, providing good warmth for Cranberries during the growing season.
Marion County Soil Profile
Soil Type
Silt Loam
Soil pH
5.8-7.1
Drainage
Well Drained
Cranberries Planting Risk Windows
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 Marion County
How your county's soil matches Cranberries's growing requirements.
Soil pH
Your soil pH (5.8–7.1) is more alkaline than Cranberries prefers (4.0–5.5). Add sulfur or peat moss to lower pH.
Soil Texture
The silt loam soil in Marion County is excellent for Cranberries — good drainage, moisture retention, and nutrient holding capacity.
Drainage
Drainage is adequate for Cranberries.
Organic Matter
Organic matter is moderate (3.1%). Annual compost additions will help Cranberries.
How to Plant Cranberries
Cranberries Water Budget
Water stress score is 6/10 — consider drought-tolerant varieties and mulching
Monthly Watering Guide for Cranberries
Cranberries needs approximately 1.5 inches of water per week (6.5" per month). Here's how your county's rainfall compares month by month.
| Month | Cranberries Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 3.9" | 0" | ❄️ Dormant |
| Feb | — | 2.9" | 0" | ❄️ Dormant |
| Mar | — | 4.2" | 0" | ❄️ Dormant |
| Apr | 6.5" | 3.3" | 3.2" | 💧 Light watering |
| May | 6.5" | 3.1" | 3.4" | 🚿 Regular watering |
| Jun | 6.5" | 3.8" | 2.7" | 💧 Light watering |
| Jul | 6.5" | 4.3" | 2.2" | 💧 Light watering |
| Aug | 6.5" | 4.1" | 2.4" | 💧 Light watering |
| Sep | 6.5" | 3" | 3.5" | 🚿 Regular watering |
| Oct | 6.5" | 2.5" | 4" | 🚿 Regular watering |
| Nov | — | 2.9" | 0" | ❄️ Dormant |
| Dec | — | 3.6" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Apr–Oct in Marion County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Cranberries 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.
Cranberries Planting Timeline — Marion County, KY
Cranberries Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | May 4 | May 4 – May 18 |
· 36" apart · Rows 48" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | — |
| May | Transplant Outdoors |
| June | — |
| July | — |
| August | — |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
1.5"/week · Only during dry spells
📅 Days to Maturity
730–1095 days
🧪 Soil pH
Needs 4–5.5 · Your soil: too_alkaline
🗺️ USDA Zone
Zone 7a
📆 Growing Season
196 days in Marion County
Growing Tips for Cranberries in Marion County
Direct sow Cranberries outdoors after April 13 in Marion County when soil has warmed and frost danger has passed.
Your 196.0-day growing season in Marion County is tight for Cranberries (730.0-1095.0 days to maturity). Start indoors and choose early-maturing varieties.
General growing tips
Create an acidic, consistently moist bed with peat moss. Cranberries do not need to be flooded to grow; flooding is only used for commercial harvesting. Mulch with sand in early spring.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Cranberries in Other Locations
Frequently Asked Questions
When should I plant Cranberries in Marion County, KY?
Marion County is in Zone 7a with an average last frost of April 13. Plan your Cranberries planting based on this frost date — see the calendar above for exact timing.
What planting zone is Marion County, KY?
Marion County, Kentucky is in USDA Hardiness Zone 7a. The average last spring frost is April 13 and first fall frost is October 26.
When should I plant Cranberries in Marion County, KY?
In Marion County, KY, plant Cranberries after the last frost (around April 13) and before the first frost (around October 26). Best results when soil holds above 50°F.
What growing zone is Marion County, KY for Cranberries?
Marion County sits in USDA Zone 7a. Cranberries grows reliably in zones 2a through 7b, so it's a good fit here.
Can Cranberries grow in Marion County's climate?
Yes — Cranberries grows well in Marion County's temperate climate. Marion County averages a 196-day frost-free season, with last frost around April 13 and first frost around October 26.
Your Marion County Garden Planner — Free
A 22-page printable planner built for Marion 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.