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When to plant Geraniums in Newton County, GA

Newton County's 232-day season only supports one Geraniums planting per year. Sow between March 9 and March 23 for the best chance at full maturity before November 10.

When to Plant Geraniums in Newton County, GA

Newton County, Georgia Zone 8b June

June to-do list for Newton County, Georgia

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

Avg. last frost March 23
Avg. first frost November 10
Soil temp (4") 78°F
Watering Low
Pest pressure High
Daylight 14.2 hrs
  1. Time to start geraniums inside

    Your window is short. These crops want several weeks of indoor growth before they go outside.

  2. Bring in the geraniums

    Check every 1–2 days. Many of these get tough or go to seed if you wait too long.

Looking ahead to July
  • 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.

Newton County, Georgia is in USDA Zone 8b. The average last spring frost is March 23 and the first fall frost is November 10, giving you a growing season of approximately 232 days.

At an elevation of 218 feet, Newton County receives approximately 52 inches of rainfall annually with predominantly clay loam soil. Summer highs average 92°F, providing good warmth for Geraniums during the growing season. Clay soil retains moisture well for Geraniums, but amend with compost to improve drainage and prevent root rot. 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
Newton County, GA (Zone 8b) Long season
232 days
Last Spring Frost March 23
232 growing days
First Fall Frost November 10

Newton County Soil Profile

Soil Type

Clay Loam

Soil pH

5.4-6.2

Drainage

Well Drained

Geraniums Planting Risk Windows

Early Start (70% safe) ✓ Fits season (22 days to spare)
Start indoors: Jan 4 Transplant: Mar 1 🌸 Bloom: May 10 – Oct 11
Recommended (50%) ✓ Fits season (22 days to spare)
Start indoors: Jan 12 Transplant: Mar 9 🌸 Bloom: May 18 – Oct 19
Safe Start (90%) ✓ Fits season (24 days to spare)
Start indoors: Jan 30 Transplant: Mar 27 🌸 Bloom: Jun 5 – Nov 6

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 Newton County

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

Soil pH

Your soil pH (5.4–6.2) is more acidic than Geraniums prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

The clay loam soil in Newton 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

3
successive plantings in your 232-day season

Sow every 8 weeks. Last sowing by Aug 02 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 121 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 4.1" 0" ❄️ Dormant
Feb 4" 0" ❄️ Dormant
Mar 4.3" 4.4" 0" ✅ Rainfall sufficient
Apr 4.3" 3.7" 0.6" 💧 Light watering
May 4.3" 4.6" 0" ✅ Rainfall sufficient
Jun 4.3" 4.4" 0" ✅ Rainfall sufficient
Jul 4.3" 5.7" 0" ✅ Rainfall sufficient
Aug 4.3" 4.7" 0" ✅ Rainfall sufficient
Sep 4.3" 4.5" 0" ✅ Rainfall sufficient
Oct 4.3" 3" 1.3" 💧 Light watering
Nov 4.3" 4.3" 0" ✅ Rainfall sufficient
Dec 4.6" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Newton 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 ~1,615 GDD — county provides 4,408 GDD Excellent fit

Geraniums Planting Timeline — Newton County, GA

Geraniums Planting Calendar

Activity When Date Range
Start Indoors January 12 Jan 12 – Jan 26
Transplant Outdoors March 9 Mar 9 – Mar 23
Bloom May 18 May 18 – Oct 19

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

Month-by-Month Timeline

MonthActivities
January Start Indoors
February
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: too_acidic

🗺️ USDA Zone

Zone 8b

📆 Growing Season

232 days in Newton County

Growing Tips for Geraniums in Newton County

Direct sow Geraniums outdoors after March 23 in Newton County when soil has warmed and frost danger has passed.

With Newton County's clay soil (29% clay), work in 3-4 inches of compost before planting Geraniums. Avoid tilling when soil is wet to prevent compaction.

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 Newton County, GA?

Newton County is in Zone 8b with an average last frost of March 23. Plan your Geraniums planting based on this frost date — see the calendar above for exact timing.

What planting zone is Newton County, GA?

Newton County, Georgia is in USDA Hardiness Zone 8b. The average last spring frost is March 23 and first fall frost is November 10.

When should I plant Geraniums in Newton County, GA?

In Newton County, GA, plant Geraniums after the last frost (around March 23) and before the first frost (around November 10). Best results when soil holds above 50°F.

What growing zone is Newton County, GA for Geraniums?

Newton 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 Newton County's climate?

Yes — Geraniums grows well in Newton County's temperate climate. Newton County averages a 232-day frost-free season, with last frost around March 23 and first frost around November 10.

🌱

Your Newton County Garden Planner — Free

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

Sources & credits

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