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When to plant Geraniums in Franklin County, AL

In Franklin County, Geraniums is a spring-only crop. Plant March 25–April 8 once soil hits 50°F.

When to Plant Geraniums in Franklin County, AL

Franklin County, Alabama Zone 7b June

Your June gardening checklist

June rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Franklin County, Alabama.

Avg. last frost March 25
Avg. first frost November 3
Soil temp (4") 79°F
Watering Low
Pest pressure High
Daylight 14.3 hrs
  1. Begin indoor sowing: geraniums

    Give them 6–8 weeks indoors before the last frost and you'll transplant into warm soil with seedlings that are already leaping.

  2. Start harvesting geraniums

    If you can't use it all right away, check the food-preservation section of your planner.

To set up a strong July, finish these tasks
  • 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.

Franklin County, Alabama is in USDA Zone 7b. The average last spring frost is March 25 and the first fall frost is November 3, giving you a growing season of approximately 223 days.

At an elevation of 105 feet, Franklin County receives approximately 56.4 inches of rainfall annually with predominantly clay loam soil. Summer highs average 89°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
Franklin County, AL (Zone 7b) Long season
223 days
Last Spring Frost March 25
223 growing days
First Fall Frost November 3

Franklin County Soil Profile

Soil Type

Clay Loam

Soil pH

5.7-6.6

Drainage

Well Drained

Geraniums Planting Risk Windows

Early Start (70% safe) ✓ Fits season (29 days to spare)
Start indoors: Jan 6 Transplant: Mar 17 🌸 Bloom: May 26 – Sep 29
Recommended (50%) ✓ Fits season (27 days to spare)
Start indoors: Jan 14 Transplant: Mar 25 🌸 Bloom: Jun 3 – Oct 7
Safe Start (90%) ✓ Fits season (26 days to spare)
Start indoors: Feb 4 Transplant: Apr 15 🌸 Bloom: Jun 24 – Oct 28

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 Franklin County

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

Soil pH

Your soil pH (5.7–6.6) overlaps with Geraniums's range (6.0–7.0), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (2.3%). 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 223-day season

Sow every 8 weeks. Last sowing by Jul 26 to harvest before frost.

Geraniums Water Budget

Plant needs
1.0″/week
Rainfall provides
1.1″/week
Watering frequency Natural rainfall sufficient
Season total 0 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 5.2" 0" ❄️ Dormant
Feb 4.1" 0" ❄️ Dormant
Mar 4.3" 5.1" 0" ✅ Rainfall sufficient
Apr 4.3" 4.6" 0" ✅ Rainfall sufficient
May 4.3" 4.1" 0.2" 💧 Light watering
Jun 4.3" 5.3" 0" ✅ Rainfall sufficient
Jul 4.3" 5.8" 0" ✅ Rainfall sufficient
Aug 4.3" 5.1" 0" ✅ Rainfall sufficient
Sep 4.3" 4.2" 0.1" 💧 Light watering
Oct 4.3" 3.6" 0.7" 💧 Light watering
Nov 4.3" 4.8" 0" ✅ Rainfall sufficient
Dec 4.5" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Franklin 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 ~1,424 GDD — county provides 3,735 GDD Excellent fit

Geraniums Planting Timeline — Franklin County, AL

Geraniums Planting Calendar

Activity When Date Range
Start Indoors January 14 Jan 14 – Jan 28
Transplant Outdoors March 25 Mar 25 – Apr 8
Bloom June 3 Jun 3 – Oct 7

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Natural rainfall sufficient

📅 Days to Maturity

70–100 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 7b

📆 Growing Season

223 days in Franklin County

Growing Tips for Geraniums in Franklin County

Direct sow Geraniums outdoors after March 25 in Franklin County when soil has warmed and frost danger has passed.

With Franklin County's clay soil (28% 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 Franklin County, AL?

Franklin County is in Zone 7b with an average last frost of March 25. Plan your Geraniums planting based on this frost date — see the calendar above for exact timing.

What planting zone is Franklin County, AL?

Franklin County, Alabama is in USDA Hardiness Zone 7b. The average last spring frost is March 25 and first fall frost is November 3.

When should I plant Geraniums in Franklin County, AL?

In Franklin County, AL, plant Geraniums after the last frost (around March 25) and before the first frost (around November 3). Best results when soil holds above 50°F.

What growing zone is Franklin County, AL for Geraniums?

Franklin County sits in USDA Zone 7b. Geraniums grows reliably in zones 2a through 11b, so it's a good fit here.

Can Geraniums grow in Franklin County's climate?

Yes — Geraniums grows well in Franklin County's temperate climate. Franklin County averages a 223-day frost-free season, with last frost around March 25 and first frost around November 3.

🌱

Your Franklin County Garden Planner — Free

A 22-page printable planner built for Franklin County (Zone 7b). 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 Franklin County, AL. Local conditions may vary. Last updated: June 2026.

Sources & credits

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