When to plant Ageratum in Monroe County County,
Monroe County County's spring Ageratum window runs October 30 through November 20. aim for a steady week of warm soil before planting.
When to Plant Ageratum in Monroe County, FL
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.
Monroe County, Florida is in USDA Zone 11b. The average last spring frost is January 1 and the first fall frost is December 31, giving you a growing season of approximately 364 days.
At an elevation of 169 feet, Monroe County receives approximately 55.6 inches of rainfall annually with predominantly sand soil. Summer highs average 93°F, providing good warmth for Ageratum during the growing season. Sandy soil warms quickly in spring — great for early planting — but Ageratum will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Ageratum root diseases.
Monroe County Soil Profile
Soil Type
Sand
Soil pH
6.0-7.0
Drainage
Well Drained
Ageratum Planting Timeline — Monroe County, FL
Ageratum Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | November 20 | Nov 20 – Dec 4 |
| Transplant Outdoors | October 30 | Oct 30 – Nov 13 |
| Direct Sow | October 30 | Oct 30 – Nov 20 |
| Bloom | December 25 | Dec 25 – Aug 20 |
· 8" apart · Rows 10" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Bloom |
| February | Bloom |
| March | Bloom |
| April | Bloom |
| May | Bloom |
| June | Bloom |
| July | Bloom |
| August | Bloom |
| September | — |
| October | Transplant Outdoors Direct Sow |
| November | Start Indoors Transplant Outdoors Direct Sow |
| December | Start Indoors Bloom |
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 11b
📆 Growing Season
365 days in Monroe County
Growing Tips for Monroe 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 Monroe County, FL?
Monroe County is in Zone 11b with an average last frost of January 1. Plan your Ageratum planting based on this frost date — see the calendar above for exact timing.
What planting zone is Monroe County, FL?
Monroe County, Florida is in USDA Hardiness Zone 11b. The average last spring frost is January 1 and first fall frost is December 31.
When should I plant Ageratum in Monroe County County, ?
In Monroe County County, , plant Ageratum after the last frost (around January 1) and before the first frost (around December 31). Best results when soil holds above 50°F.
What growing zone is Monroe County County, for Ageratum?
Monroe County County sits in USDA Zone 11b. Ageratum grows reliably in zones 3a through 11b, so it's a good fit here.
Can Ageratum grow in Monroe County County's climate?
Yes — Ageratum grows well in Monroe County County's temperate climate. Monroe County County averages a 365-day frost-free season, with last frost around January 1 and first frost around December 31.
Your Monroe County Garden Planner — Free
A 22-page printable planner built for Monroe County (Zone 11b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.