When to plant Foxglove in Harrison County, IN
In Zone 6b (Harrison County), direct-sow Foxglove between April 15 and May 6 for spring, after the April 8 last-frost mark.
When to Plant Foxglove in Harrison County, IN
Foxglove (Digitalis purpurea) is a stately cottage garden classic, sending up dramatic 3–5 foot spires of tubular flowers — spotted purple, pink, white, or cream — in late spring and early summer. Technically biennial (flowering in its second year), foxglove perpetuates itself so freely from self-sown seed that established plantings appear to be permanent perennials. A key source plant for the heart medication digitalis, all parts are highly toxic if ingested. Bumblebees are the primary pollinators, crawling deep into each bell-shaped flower. Partial shade and cool, moist woodland-edge conditions suit foxglove best; it resents heat and drought.
Harrison County, Indiana is in USDA Zone 6b. The average last spring frost is April 8 and the first fall frost is October 31, giving you a growing season of approximately 206 days.
At an elevation of 528 feet, Harrison County receives approximately 40.9 inches of rainfall annually with predominantly silt loam soil. Summer highs average 88°F, providing good warmth for Foxglove during the growing season.
Harrison County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Foxglove Planting Timeline — Harrison County, IN
Foxglove Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | February 4 | Feb 4 – Feb 18 |
| Transplant Outdoors | April 15 | Apr 15 – Apr 29 |
| Direct Sow | April 15 | Apr 15 – May 6 |
| Bloom | June 10 | Jun 10 – Jul 15 |
Plant 0.1" deep · 18" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Start Indoors |
| March | — |
| April | Transplant Outdoors Direct Sow |
| May | Direct Sow |
| June | Bloom |
| July | Bloom |
| August | — |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Partial Shade (3-6 hours)
💧 Water
Moderate — regular watering
📅 Days to Maturity
80–120 days
🧪 Soil pH
Needs 5.5–6.5 · Your soil: N/A
🗺️ USDA Zone
Zone 6b
📆 Growing Season
206 days in Harrison County
Growing Tips for Harrison County
Sow seeds indoors 8–10 weeks before last frost or direct-sow outdoors in late spring/early summer for next-year bloom (biennial cycle). Surface-sow — seeds need light to germinate. Transplant after last frost into cool, moist, well-amended soil. Morning sun with afternoon shade is ideal; full shade reduces bloom but is tolerated. Keep consistently moist. First-year plants form a basal rosette only; second-year plants produce flower spikes. After bloom, cut the main spike before seed scatters to prevent excessive spreading, or leave some spikes to self-seed for naturalizing. Perennial species (D. grandiflora, D. x mertonensis) maintain clumps without requiring self-seeding. Wear gloves when handling — all plant parts toxic.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Foxglove in Other Locations
Frequently Asked Questions
When should I plant Foxglove in Harrison County, IN?
Harrison County is in Zone 6b with an average last frost of April 8. Plan your Foxglove planting based on this frost date — see the calendar above for exact timing.
What planting zone is Harrison County, IN?
Harrison County, Indiana is in USDA Hardiness Zone 6b. The average last spring frost is April 8 and first fall frost is October 31.
When should I plant Foxglove in Harrison County, IN?
In Harrison County, IN, plant Foxglove after the last frost (around April 8) and before the first frost (around October 31). Best results when soil holds above 50°F.
What growing zone is Harrison County, IN for Foxglove?
Harrison County sits in USDA Zone 6b. Foxglove grows reliably in zones 3a through 9a, so it's a good fit here.
Can Foxglove grow in Harrison County's climate?
Yes — Foxglove grows well in Harrison County's temperate climate. Harrison County averages a 206-day frost-free season, with last frost around April 8 and first frost around October 31.
Your Harrison County Garden Planner — Free
A 22-page printable planner built for Harrison County (Zone 6b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.