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When to plant Roses in Johnson County County,

In Johnson County County, Roses is a spring-only crop. Plant March 26–April 9 once soil hits 50°F.

When to Plant Roses in Johnson County, AR

Johnson County, Arkansas Zone 8a June

June in the garden — Johnson County, Arkansas

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

Avg. last frost March 26
Avg. first frost November 3
Soil temp (4") 78°F
Watering Low
Pest pressure High
Daylight 14.4 hrs
  1. Collect roses at their peak

    Don't tug. Use scissors or pruners for clean cuts — torn stems invite disease.

July will be here before you know it — start on
  • First harvests: roses

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Roses (Rosa spp.) are the world's most beloved flowering shrubs, grown for centuries for their exquisite blooms, fragrance, and versatility. Modern repeat-blooming cultivars deliver continuous color from late spring through the first hard frost, while old garden roses typically offer a single magnificent spring flush. Hardy shrub roses such as the Knock Out® and Canadian Explorer series tolerate Zone 3–4 winters without protection. With correct siting (6+ hours of sun, good air circulation), disease- resistant varieties thrive with moderate maintenance.

Johnson County, Arkansas is in USDA Zone 8a. The average last spring frost is March 26 and the first fall frost is November 3, giving you a growing season of approximately 222 days.

At an elevation of 1,347 feet, Johnson County receives approximately 49.7 inches of rainfall annually with predominantly silt loam soil. Summer highs average 91°F, providing good warmth for Roses during the growing season.

Perennial Blooms in Multi-season Pollinator-friendly Good for cutting Fragrant
Johnson County, AR (Zone 8a) Long season
222 days
Last Spring Frost March 26
222 growing days
First Fall Frost November 3
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Johnson County Soil Profile

Soil Type

Silt Loam

Soil pH

5.3-7

Drainage

Well Drained

Roses Planting Risk Windows

Early Start (70% safe) ✓ Fits season (11 days to spare)
Start indoors: Jan 17 Transplant: Mar 21 🌸 Bloom: May 30 – Oct 17
Recommended (50%) ✓ Fits season (12 days to spare)
Start indoors: Jan 22 Transplant: Mar 26 🌸 Bloom: Jun 4 – Oct 22
Safe Start (90%) ✓ Fits season (19 days to spare)
Start indoors: Feb 5 Transplant: Apr 9 🌸 Bloom: Jun 18 – Nov 5

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 Johnson County

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

Soil pH

Your soil pH (5.3–7.0) overlaps with Roses's range (6.0–6.5), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (2.6%). Annual compost additions will help Roses.

How to Plant Roses

1"
Planting Depth
36"
Between Plants
48"
Between Rows

Roses 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 118 gal / 100 sq ft

Monthly Watering Guide for Roses

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

Month Roses Needs Rainfall You Supplement Action
Jan 3.8" 0" ❄️ Dormant
Feb 3.8" 0" ❄️ Dormant
Mar 4.3" 4.7" 0" ✅ Rainfall sufficient
Apr 4.3" 3.6" 0.7" 💧 Light watering
May 4.3" 4.1" 0.2" 💧 Light watering
Jun 4.3" 5" 0" ✅ Rainfall sufficient
Jul 4.3" 4.6" 0" ✅ Rainfall sufficient
Aug 4.3" 4.3" 0" ✅ Rainfall sufficient
Sep 4.3" 4.1" 0.2" 💧 Light watering
Oct 4.3" 3.7" 0.6" 💧 Light watering
Nov 4.3" 4.2" 0.1" 💧 Light watering
Dec 3.9" 0" ❄️ Dormant

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

Roses 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.

Roses needs ~2,464 GDD — county provides 4,051 GDD Excellent fit

Roses Planting Timeline — Johnson County, AR

Roses Planting Calendar

Activity When Date Range
Start Indoors January 22 Jan 22 – Feb 5
Transplant Outdoors March 26 Mar 26 – Apr 9
Bloom June 4 Jun 4 – Oct 22

Plant 1" deep · 36" apart · Rows 48" apart

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Only during dry spells

📅 Days to Maturity

90–180 days

🧪 Soil pH

Needs 6–6.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 8a

📆 Growing Season

222 days in Johnson County

Growing Tips for Roses in Johnson County

Direct sow Roses outdoors after March 26 in Johnson County when soil has warmed and frost danger has passed.

General growing tips

Plant bare-root roses in early spring as soon as soil is workable, or set container-grown plants from spring through early fall. Dig a wide, deep hole; amend with compost and a handful of bone meal. Set the graft union 1–2 inches below soil level in Zones 3–6 for winter protection, at soil level in Zones 7+. Water deeply twice weekly until established. Fertilize with a balanced rose food every 4–6 weeks during the growing season. Prune hybrid teas and grandifloras to outward-facing buds in early spring when forsythia blooms. Deadhead to encourage repeat bloom. Fall planting (Zones 5+) can improve establishment in subsequent years. Year 2+ plants deliver the fullest bloom display.

Companion Planting

Good Companions

Avoid Planting Near

  • Fennel
  • Brassicas

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Roses in Johnson County, AR?

Johnson County is in Zone 8a with an average last frost of March 26. Plan your Roses planting based on this frost date — see the calendar above for exact timing.

What planting zone is Johnson County, AR?

Johnson County, Arkansas is in USDA Hardiness Zone 8a. The average last spring frost is March 26 and first fall frost is November 3.

When should I plant Roses in Johnson County, ?

In Johnson County, , plant Roses after the last frost (around March 26) and before the first frost (around November 3). Best results when soil holds above 50°F.

What growing zone is Johnson County, for Roses?

Johnson County sits in USDA Zone 8a. Roses grows reliably in zones 3a through 10b, so it's a good fit here.

Can Roses grow in Johnson County's climate?

Yes — Roses grows well in Johnson County's temperate climate. Johnson County averages a 222-day frost-free season, with last frost around March 26 and first frost around November 3.

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Your Johnson County Garden Planner — Free

A 22-page printable planner built for Johnson County (Zone 8a). 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 Johnson County, AR. Local conditions may vary. Last updated: June 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.