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When to plant Geraniums in Arkansas County, AR

Plant Geraniums in Arkansas County during the brief February 28–March 14 window. With 243 frost-free days, fall plantings can't mature before November 12.

When to Plant Geraniums in Arkansas County, AR

Arkansas County, Arkansas Zone 8b June

Your June game plan for Arkansas County, Arkansas

June is a pivotal month for Arkansas County, Arkansas gardens. Focus on these tasks first and you'll set up the rest of the season for success.

Avg. last frost March 14
Avg. first frost November 12
Soil temp (4") 77°F
Watering Low
Pest pressure High
Daylight 14.3 hrs
  1. Bring in the geraniums

    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: geraniums

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Geraniums (Pelargonium × hortorum) are tender perennials grown as warm-season annuals throughout North America. Prized for their bold flower clusters, long bloom period, and tolerance of summer heat when planted in well-drained soil, they anchor window boxes, containers, and bed borders from late spring until hard frost. Zones 9b–11b can overwinter plants in the ground.

Arkansas County, Arkansas is in USDA Zone 8b. The average last spring frost is March 14 and the first fall frost is November 12, giving you a growing season of approximately 243 days.

At an elevation of 803 feet, Arkansas County receives approximately 51.3 inches of rainfall annually with predominantly silt loam soil. Summer highs average 93°F, providing good warmth for Geraniums during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Geraniums root diseases.

Annual Blooms in Multi-season Pollinator-friendly Deer-resistant Good for cutting Fragrant
Arkansas County, AR (Zone 8b) Long season
243 days
Last Spring Frost March 14
243 growing days
First Fall Frost November 12

Arkansas County Soil Profile

Soil Type

Silt Loam

Soil pH

5.4-6.6

Drainage

Well Drained

Geraniums Planting Risk Windows

Early Start (70% safe) ✓ Fits season (29 days to spare)
Start indoors: Dec 29 Transplant: Feb 23 🌸 Bloom: May 4 – Oct 5
Recommended (50%) ✓ Fits season (33 days to spare)
Start indoors: Jan 3 Transplant: Feb 28 🌸 Bloom: May 9 – Oct 10
Safe Start (90%) ✓ Fits season (26 days to spare)
Start indoors: Jan 26 Transplant: Mar 23 🌸 Bloom: Jun 1 – Nov 2

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 Arkansas County

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

Soil pH

Your soil pH (5.4–6.6) overlaps with Geraniums's range (6.0–7.0), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (2.8%). Annual compost additions will help Geraniums.

How to Plant Geraniums

0.1"
Planting Depth
12"
Between Plants
14"
Between Rows

Succession Planting Geraniums

4
successive plantings in your 243-day season

Sow every 8 weeks. Last sowing by Aug 04 to harvest before frost.

Geraniums 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 245 gal / 100 sq ft

Monthly Watering Guide for Geraniums

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

Month Geraniums Needs Rainfall You Supplement Action
Jan 4.2" 0" ❄️ Dormant
Feb 4.3" 0" ❄️ Dormant
Mar 4.3" 5" 0" ✅ Rainfall sufficient
Apr 4.3" 3.6" 0.7" 💧 Light watering
May 4.3" 3.7" 0.6" 💧 Light watering
Jun 4.3" 4.4" 0" ✅ Rainfall sufficient
Jul 4.3" 5.2" 0" ✅ Rainfall sufficient
Aug 4.3" 5.3" 0" ✅ Rainfall sufficient
Sep 4.3" 4.6" 0" ✅ Rainfall sufficient
Oct 4.3" 3.7" 0.6" 💧 Light watering
Nov 4.3" 3.6" 0.7" 💧 Light watering
Dec 3.7" 0" ❄️ Dormant

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

Geraniums 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.

Geraniums needs ~1,679 GDD — county provides 4,799 GDD Excellent fit

Geraniums Planting Timeline — Arkansas County, AR

Geraniums Planting Calendar

Activity When Date Range
Start Indoors January 3 Jan 3 – Jan 17
Transplant Outdoors February 28 Feb 28 – Mar 14
Bloom May 9 May 9 – Oct 10

Plant 0.1" deep · 12" apart · Rows 14" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Only during dry spells

📅 Days to Maturity

70–100 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 8b

📆 Growing Season

243 days in Arkansas County

Growing Tips for Geraniums in Arkansas County

Direct sow Geraniums outdoors after March 14 in Arkansas County when soil has warmed and frost danger has passed.

General growing tips

Start seeds indoors 10–12 weeks before last frost — germination is slow and erratic without bottom heat (70–75°F). Transplant after frost danger passes. Geraniums rarely direct-sown; cuttings or transplants are the standard. Deadhead spent umbels weekly to maintain continuous bloom. Let soil dry slightly between waterings to prevent root rot. In zones 10–11 plants may be left in ground year-round or overwintered as houseplants.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Geraniums in Arkansas County, AR?

Arkansas County is in Zone 8b with an average last frost of March 14. Plan your Geraniums planting based on this frost date — see the calendar above for exact timing.

What planting zone is Arkansas County, AR?

Arkansas County, Arkansas is in USDA Hardiness Zone 8b. The average last spring frost is March 14 and first fall frost is November 12.

When should I plant Geraniums in Arkansas County, AR?

In Arkansas County, AR, plant Geraniums after the last frost (around March 14) and before the first frost (around November 12). Best results when soil holds above 50°F.

What growing zone is Arkansas County, AR for Geraniums?

Arkansas County sits in USDA Zone 8b. Geraniums grows reliably in zones 2a through 11b, so it's a good fit here.

Can Geraniums grow in Arkansas County's climate?

Yes — Geraniums grows well in Arkansas County's temperate climate. Arkansas County averages a 243-day frost-free season, with last frost around March 14 and first frost around November 12.

🌱

Your Arkansas County Garden Planner — Free

A 22-page printable planner built for Arkansas County (Zone 8b). 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 Arkansas 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.