When to plant Larkspur in Gladwin County, MI
Plant Larkspur in Gladwin County, when soil hits 50°F — usually April 11. Continue planting through May 2 for the spring crop.
When to Plant Larkspur in Gladwin County, MI
Larkspur (Consolida ajacis) is a cool-season annual that produces tall, delicate spires of blue, purple, pink, and white flowers reminiscent of its perennial cousin, delphinium. Direct-sown into cold soil or fall-sown in mild-winter climates, it blooms in spring before going to seed as summer heat arrives. An excellent cut flower and cottage-garden staple.
Gladwin County, Michigan is in USDA Zone 6a. The average last spring frost is May 9 and the first fall frost is October 6, giving you a growing season of approximately 150 days.
At an elevation of 832 feet, Gladwin County receives approximately 36.9 inches of rainfall annually with predominantly silt loam soil. Summer highs average 83°F, so choose short-season varieties of Larkspur to ensure they mature before fall.
Gladwin County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Larkspur Planting Timeline — Gladwin County, MI
Larkspur Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Direct Sow | April 11 | Apr 11 – May 2 |
| Bloom | June 20 | Jun 20 – Aug 15 |
Plant 0.1" deep · 8" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Direct Sow |
| May | Direct Sow |
| June | Bloom |
| July | Bloom |
| August | Bloom |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
Low — drought tolerant
📅 Days to Maturity
60–90 days
🧪 Soil pH
Needs 6–7 · Your soil: N/A
🗺️ USDA Zone
Zone 6a
📆 Growing Season
150 days in Gladwin County
Growing Tips for Gladwin County
Larkspur does not transplant well — direct-sow only. In cold climates (zones 2–6), sow directly in early spring as soon as soil can be worked, 4–6 weeks before last frost; cold soil improves germination. In zones 7–10, fall-sow 8–10 weeks before first frost for spring bloom. Press seeds lightly into soil; they need darkness to germinate — cover with 1/8–1/4 inch of soil. Thin to 6–12 inches to prevent powdery mildew. Allow seed pods to mature and self-sow for naturalized colonies. All parts are toxic if ingested.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Larkspur in Other Locations
Frequently Asked Questions
When should I plant Larkspur in Gladwin County, MI?
Gladwin County is in Zone 6a with an average last frost of May 9. Plan your Larkspur planting based on this frost date — see the calendar above for exact timing.
What planting zone is Gladwin County, MI?
Gladwin County, Michigan is in USDA Hardiness Zone 6a. The average last spring frost is May 9 and first fall frost is October 6.
When should I plant Larkspur in Gladwin County, MI?
In Gladwin County, MI, plant Larkspur after the last frost (around May 9) and before the first frost (around October 6). Best results when soil holds above 50°F.
What growing zone is Gladwin County, MI for Larkspur?
Gladwin County sits in USDA Zone 6a. Larkspur grows reliably in zones 2a through 10b, so it's a good fit here.
Can Larkspur grow in Gladwin County's climate?
Yes — Larkspur grows well in Gladwin County's temperate climate. Gladwin County averages a 150-day frost-free season, with last frost around May 9 and first frost around October 6.
Your Gladwin County Garden Planner — Free
A 22-page printable planner built for Gladwin County (Zone 6a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.