When to plant Alliums in Franklin County, AL
For Alliums in Franklin County, the safe spring window opens around mid-spring and closes around late spring. Last expected frost is March 25, first fall frost November 3, giving a 223-day growing season. A second sowing from September 29 to October 13 extends the harvest into fall.
When to Plant Alliums in Franklin County, AL
Your June game plan for Franklin County, Alabama
A quick June briefing for Franklin County, Alabama gardeners — what's urgent, what's next, and what can wait.
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.
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 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.
Franklin County Soil Profile
Soil Type
Clay Loam
Soil pH
5.7-6.6
Drainage
Well Drained
Alliums Planting Risk Windows
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 Alliums's growing requirements.
Soil pH
Your soil pH (5.7–6.6) is within Alliums's preferred range (5.5–7.5).
Soil Texture
The clay loam soil in Franklin County is excellent for Alliums — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (2.3%). Annual compost additions will help Alliums.
How to Plant Alliums
Fall planting: Sow 5 weeks before your first frost date for a fall harvest.
Succession Planting Alliums
Sow every 3.1 weeks. Last sowing by Sep 22 to harvest before frost.
For a dedicated fall crop, sow by Sep 29.
Alliums Water Budget
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 | — | 5.2" | 0" | ❄️ Dormant |
| Feb | — | 4.1" | 0" | ❄️ Dormant |
| Mar | 2.2" | 5.1" | 0" | ✅ Rainfall sufficient |
| Apr | 2.2" | 4.6" | 0" | ✅ Rainfall sufficient |
| May | 2.2" | 4.1" | 0" | ✅ Rainfall sufficient |
| Jun | 2.2" | 5.3" | 0" | ✅ Rainfall sufficient |
| Jul | 2.2" | 5.8" | 0" | ✅ Rainfall sufficient |
| Aug | 2.2" | 5.1" | 0" | ✅ Rainfall sufficient |
| Sep | 2.2" | 4.2" | 0" | ✅ Rainfall sufficient |
| Oct | 2.2" | 3.6" | 0" | ✅ Rainfall sufficient |
| Nov | 2.2" | 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.
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 Planting Timeline — Franklin County, AL
Alliums Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Bloom | October 27 | Oct 27 – Nov 17 |
| Fall Sowing | September 29 | Sep 29 – Oct 13 |
Plant 5" deep · 7" apart · Rows 8" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| 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 7b
📆 Growing Season
223 days in Franklin County
Growing Tips for Alliums in Franklin County
Direct sow Alliums 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 Alliums. Avoid tilling when soil is wet to prevent compaction.
Your generous 223.0-day season in Franklin 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
Check more plant combinations with our Companion Planting Checker →
Alliums in Other Locations
Frequently Asked Questions
When should I plant Alliums in Franklin County, AL?
Franklin County is in Zone 7b with an average last frost of March 25. Plan your Alliums 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 Alliums in Franklin County, AL?
In Franklin County, AL, plant Alliums 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 Alliums?
Franklin County sits in USDA Zone 7b. Alliums grows reliably in zones 3a through 9b, so it's a good fit here.
Can Alliums grow in Franklin County's climate?
Yes — Alliums 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.