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When to plant Alliums in Cleburne County, AL

Spring Alliums in Cleburne County goes in mid-spring–late spring, once nighttime temps stop dipping near freezing. A second sowing from September 27 to October 11 extends the harvest into fall.

When to Plant Alliums in Cleburne County, AL

Cleburne County, Alabama Zone 8a June

What to do in June

Your garden in Cleburne County, Alabama is working on a schedule, even when you're not. Here's where you should be this June.

Avg. last frost April 1
Avg. first frost November 1
Soil temp (4") 80°F
Watering Low
Pest pressure High
Daylight 14.2 hrs

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Ornamental alliums (Allium spp.) bridge the gap between spring and summer with their striking globe-shaped flower heads in shades of purple, violet, white, and pink. Blooming after tulips have faded, they extend the spring display well into early summer. 'Gladiator', 'Globemaster', and 'Purple Sensation' produce softball-sized heads on 18–36 inch stems, while smaller species create charming accents at border fronts. Deer and rodents shun them completely due to the characteristic onion scent. Dried seed heads provide architectural interest into fall.

Cleburne County, Alabama is in USDA Zone 8a. The average last spring frost is April 1 and the first fall frost is November 1, giving you a growing season of approximately 214 days.

At an elevation of 207 feet, Cleburne County receives approximately 57.8 inches of rainfall annually with predominantly clay loam soil. Summer highs average 91°F, providing good warmth for Alliums during the growing season. Clay soil retains moisture well for Alliums, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Alliums root diseases.

Bulb Blooms in Spring Pollinator-friendly Deer-resistant Good for cutting
Cleburne County, AL (Zone 8a) Long season
214 days
Last Spring Frost April 1
214 growing days
First Fall Frost November 1

Cleburne County Soil Profile

Soil Type

Clay Loam

Soil pH

5.5-6.6

Drainage

Well Drained

Alliums Planting Risk Windows

Early Start (70% safe) ✓ Fits season (167 days to spare)
Transplant: Mar 24 🌸 Bloom: Apr 21 – May 12
Recommended (50%) ✓ Fits season (165 days to spare)
Transplant: Apr 1 🌸 Bloom: Apr 29 – May 20
Safe Start (90%) ✓ Fits season (168 days to spare)
Transplant: Apr 18 🌸 Bloom: May 16 – Jun 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 Cleburne County

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

Soil pH

Your soil pH (5.5–6.6) is within Alliums's preferred range (5.5–7.5).

Soil Texture

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

Organic Matter

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

How to Plant Alliums

5"
Planting Depth
7"
Between Plants
8"
Between Rows

Fall planting: Sow 5 weeks before your first frost date for a fall harvest.

Succession Planting Alliums

9
successive plantings in your 214-day season

Sow every 3.1 weeks. Last sowing by Sep 20 to harvest before frost.

For a dedicated fall crop, sow by Sep 27.

Alliums Water Budget

Plant needs
0.5″/week
Rainfall provides
1.1″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

Monthly Watering Guide for Alliums

Alliums needs approximately 0.5 inches of water per week (2.2" per month). Here's how your county's rainfall compares month by month.

Month Alliums Needs Rainfall You Supplement Action
Jan 4.9" 0" ❄️ Dormant
Feb 3.9" 0" ❄️ Dormant
Mar 6.1" 0" ❄️ Dormant
Apr 2.2" 4.3" 0" ✅ Rainfall sufficient
May 2.2" 4.8" 0" ✅ Rainfall sufficient
Jun 2.2" 5.9" 0" ✅ Rainfall sufficient
Jul 2.2" 5.6" 0" ✅ Rainfall sufficient
Aug 2.2" 5.5" 0" ✅ Rainfall sufficient
Sep 2.2" 3.9" 0" ✅ Rainfall sufficient
Oct 2.2" 3.8" 0" ✅ Rainfall sufficient
Nov 2.2" 4.4" 0" ✅ Rainfall sufficient
Dec 4.7" 0" ❄️ Dormant

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

Alliums 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.

Alliums needs ~639 GDD — county provides 3,905 GDD Excellent fit

Alliums Planting Timeline — Cleburne County, AL

Alliums Planting Calendar

Activity When Date Range
Bloom October 25 Oct 25 – Nov 15
Fall Sowing September 27 Sep 27 – Oct 11

Plant 5" deep · 7" apart · Rows 8" apart

Month-by-Month Timeline

MonthActivities
January
February
March
April
May
June
July
August
September Fall Sowing
October Fall Sowing Bloom
November Bloom
December

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.5"/week · Natural rainfall sufficient

📅 Days to Maturity

28–42 days

🧪 Soil pH

Needs 5.5–7.5 · Your soil: ideal

🗺️ USDA Zone

Zone 8a

📆 Growing Season

214 days in Cleburne County

Growing Tips for Alliums in Cleburne County

Direct sow Alliums outdoors after April 01 in Cleburne County when soil has warmed and frost danger has passed.

With Cleburne County's clay soil (26% clay), work in 3-4 inches of compost before planting Alliums. Avoid tilling when soil is wet to prevent compaction.

Your generous 214.0-day season in Cleburne County allows multiple plantings of Alliums. Sow every 14.0 days for continuous harvest.

Common pests for Alliums in this region include onion maggots and thrips. Use row covers early in the season and inspect plants weekly.

General growing tips

Plant bulbs in fall, 3–4 times as deep as the bulb diameter (typically 4–6 inches for large types, 3 inches for small species). Space 6–8 inches apart for standard cultivars. Foliage often looks untidy as it dies back before bloom — plant around perennials that will conceal the yellowing leaves. Excellent drainage is essential; alliums rot in wet soils. Leave bulbs in place for naturalization; divide every 3–4 years when clusters become congested. Deadhead spent globes or leave for ornamental seedheads and self-sowing.

Companion Planting

Good Companions

Avoid Planting Near

  • Beans
  • Peas

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Alliums in Cleburne County, AL?

Cleburne County is in Zone 8a with an average last frost of April 1. Plan your Alliums planting based on this frost date — see the calendar above for exact timing.

What planting zone is Cleburne County, AL?

Cleburne County, Alabama is in USDA Hardiness Zone 8a. The average last spring frost is April 1 and first fall frost is November 1.

When should I plant Alliums in Cleburne County, AL?

In Cleburne County, AL, plant Alliums after the last frost (around April 1) and before the first frost (around November 1). Best results when soil holds above 50°F.

What growing zone is Cleburne County, AL for Alliums?

Cleburne County sits in USDA Zone 8a. Alliums grows reliably in zones 3a through 9b, so it's a good fit here.

Can Alliums grow in Cleburne County's climate?

Yes — Alliums grows well in Cleburne County's temperate climate. Cleburne County averages a 214-day frost-free season, with last frost around April 1 and first frost around November 1.

🌱

Your Cleburne County Garden Planner — Free

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

Sources & credits

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