When to plant Ageratum in Greene County, AL
Greene County gardeners should plant Ageratum between March 6 and March 27 in spring. With Greene County's Zone 8b climate (last frost March 20), Ageratum needs 60–75 days to mature — plant by August 28 for a full harvest.
When to Plant Ageratum in Greene County, AL
Ageratum (Ageratum houstonianum), the floss flower, produces clusters of fluffy, powder-puff blooms in the rare sky-blue and lavender tones difficult to find among warm-season annuals. Compact mounding habit makes it ideal as a front-of-border edging plant. Blooms from early summer through fall with minimal deadheading; heat and humidity tolerant once established.
Greene County, Alabama is in USDA Zone 8b. The average last spring frost is March 20 and the first fall frost is November 11, giving you a growing season of approximately 236 days.
At an elevation of 128 feet, Greene County receives approximately 61.8 inches of rainfall annually with predominantly clay loam soil. Summer highs average 91°F, providing good warmth for Ageratum during the growing season. Clay soil retains moisture well for Ageratum, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Ageratum root diseases.
Greene County Soil Profile
Soil Type
Clay Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Ageratum Planting Timeline — Greene County, AL
Ageratum Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | February 6 | Feb 6 – Feb 20 |
| Transplant Outdoors | March 6 | Mar 6 – Mar 20 |
| Direct Sow | March 6 | Mar 6 – Mar 27 |
| Bloom | May 1 | May 1 – Oct 2 |
· 8" apart · Rows 10" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Start Indoors |
| March | Transplant Outdoors Direct Sow |
| April | — |
| May | Bloom |
| June | Bloom |
| July | Bloom |
| August | Bloom |
| September | Bloom |
| October | Bloom |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
Moderate — regular watering
📅 Days to Maturity
60–75 days
🧪 Soil pH
Needs 6–7 · Your soil: N/A
🗺️ USDA Zone
Zone 8b
📆 Growing Season
236 days in Greene County
Growing Tips for Greene County
Start seeds indoors 6–8 weeks before last frost — do not cover seed; it needs light to germinate. Can be direct-sown after last frost once soil warms to 60°F. Transplant or thin to proper spacing after frost danger passes. Deadheading isn't strictly required but tidying spent clusters improves appearance. Provide consistent moisture; drought causes premature setting. Avoid deep shade — blooms best in full sun to light afternoon shade.
Companion Planting
Good Companions
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Ageratum in Other Locations
Frequently Asked Questions
When should I plant Ageratum in Greene County, AL?
Greene County is in Zone 8b with an average last frost of March 20. Plan your Ageratum planting based on this frost date — see the calendar above for exact timing.
What planting zone is Greene County, AL?
Greene County, Alabama is in USDA Hardiness Zone 8b. The average last spring frost is March 20 and first fall frost is November 11.
When should I plant Ageratum in Greene County, AL?
In Greene County, AL, plant Ageratum after the last frost (around March 20) and before the first frost (around November 11). Best results when soil holds above 50°F.
What growing zone is Greene County, AL for Ageratum?
Greene County sits in USDA Zone 8b. Ageratum grows reliably in zones 3a through 11b, so it's a good fit here.
Can Ageratum grow in Greene County's climate?
Yes — Ageratum grows well in Greene County's temperate climate. Greene County averages a 236-day frost-free season, with last frost around March 20 and first frost around November 11.
Your Greene County Garden Planner — Free
A 22-page printable planner built for Greene 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.