Blog

When to Plant Currants in Jackson County, IA

Currants are small, tart berries that grow on attractive shrubs in red, white, and black varieties. They are prized for jams, jellies, and liqueurs.

Jackson County, Iowa is in USDA Zone 5a. The average last spring frost is April 17 and the first fall frost is October 16, giving you a growing season of approximately 182 days.

At an elevation of 1,321 feet, Jackson County receives approximately 35.1 inches of rainfall annually with predominantly silt loam soil. Summer highs average 85ยฐF, providing good warmth for Currants during the growing season.

Jackson County, IA (Zone 5a) Moderate season
182 days
Last Spring Frost April 17
182 growing days
First Fall Frost October 16

Jackson County Soil Profile

Soil Type

Silt Loam

Soil pH

6.2-6.9

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season
Transplant: May 2
Recommended (50%) ✓ Fits season
Transplant: May 8
Safe Start (90%) ✓ Fits season
Transplant: May 24

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 Jackson County

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

Soil pH

Your soil pH (6.2โ€“6.9) is more alkaline than Currants prefers (6.0โ€“6.5). Add sulfur or peat moss to lower pH.

Soil Texture

The silt loam soil in Jackson County is excellent for Currants โ€” good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is excellent (4.5%) โ€” Currants will thrive.

How to Plant Currants

48"
Between Plants
72"
Between Rows

Plant Water Budget

Plant needs
0.8″/week
Rainfall provides
0.8″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Currants needs ~12,547 GDD — county provides 2,502 GDD May not mature

Currants Planting Timeline โ€” Jackson County, IA

Currants Planting Calendar

Activity When Date Range
Transplant Outdoors May 8 May 8 โ€“ May 22

ยท 48" apart ยท Rows 72" apart

Month-by-Month Timeline

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

Growing Conditions

โ˜€๏ธ Sun

Partial Shade (3-6 hours)

๐Ÿ’ง Water

0.8"/week ยท Natural rainfall sufficient

๐Ÿ“… Days to Maturity

730โ€“1095 days

๐Ÿงช Soil pH

Needs 6โ€“6.5 ยท Your soil: too_alkaline

๐Ÿ—บ๏ธ USDA Zone

Zone 5a

๐Ÿ“† Growing Season

182 days in Jackson County

Growing Tips for Currants in Jackson County

Direct sow Currants outdoors after April 17 in Jackson County when soil has warmed and frost danger has passed.

Your 182.0-day growing season in Jackson County is tight for Currants (730.0-1095.0 days to maturity). Start indoors and choose early-maturing varieties.

General growing tips

Plant in a sheltered location with morning sun. Prune out wood older than 3 years to encourage new fruiting wood. Mulch heavily to keep roots cool and moist.

Companion Planting

Good Companions

Level Up Your Garden

Frequently Asked Questions

When should I plant Currants in Jackson County, IA?

Jackson County is in Zone 5a with an average last frost of April 17. Plan your Currants planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Jackson County, IA?

Jackson County, Iowa is in USDA Hardiness Zone 5a. The average last spring frost is April 17 and first fall frost is October 16.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Jackson County gardeners in Zone 5a organize planting dates, track what's growing, and never miss a planting window.

Get Your Free Garden Planner →

Free download. Plan your entire garden season in minutes.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Jackson County, IA. Local conditions may vary. Last updated: April 2026.