When to plant Ageratum in Pulaski County, IN
For Pulaski County, gardeners: plant Ageratum May 2 through May 23 once soil reads 50°F.
When to Plant Ageratum in Pulaski County, IN
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.
Pulaski County, Indiana is in USDA Zone 5b. The average last spring frost is April 25 and the first fall frost is October 17, giving you a growing season of approximately 175 days.
At an elevation of 764 feet, Pulaski County receives approximately 31.3 inches of rainfall annually with predominantly silt loam soil. Summer highs average 85°F, providing good warmth for Ageratum during the growing season.
Pulaski County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Ageratum Planting Timeline — Pulaski County, IN
Ageratum Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 7 | Mar 7 – Mar 21 |
| Transplant Outdoors | May 2 | May 2 – May 16 |
| Direct Sow | May 2 | May 2 – May 23 |
| Bloom | June 27 | Jun 27 – Sep 26 |
· 8" apart · Rows 10" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors |
| April | — |
| May | Transplant Outdoors Direct Sow |
| June | Bloom |
| July | Bloom |
| August | Bloom |
| September | Bloom |
| October | — |
| 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 5b
📆 Growing Season
175 days in Pulaski County
Growing Tips for Pulaski 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
Check more plant combinations with our Companion Planting Checker →
Ageratum in Other Locations
Frequently Asked Questions
When should I plant Ageratum in Pulaski County, IN?
Pulaski County is in Zone 5b with an average last frost of April 25. Plan your Ageratum planting based on this frost date — see the calendar above for exact timing.
What planting zone is Pulaski County, IN?
Pulaski County, Indiana is in USDA Hardiness Zone 5b. The average last spring frost is April 25 and first fall frost is October 17.
When should I plant Ageratum in Pulaski County, IN?
In Pulaski County, IN, plant Ageratum after the last frost (around April 25) and before the first frost (around October 17). Best results when soil holds above 50°F.
What growing zone is Pulaski County, IN for Ageratum?
Pulaski County sits in USDA Zone 5b. Ageratum grows reliably in zones 3a through 11b, so it's a good fit here.
Can Ageratum grow in Pulaski County's climate?
Yes — Ageratum grows well in Pulaski County's temperate climate. Pulaski County averages a 175-day frost-free season, with last frost around April 25 and first frost around October 17.
Your Pulaski County Garden Planner — Free
A 22-page printable planner built for Pulaski County (Zone 5b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.