When to plant Larkspur in Sutter County, CA
Plant Larkspur in Sutter County from mid-spring to late spring in spring. Sutter County sits in USDA Zone 9b, with last frost around March 4 and first frost on November 26. A second sowing from September 24 to October 8 extends the harvest into fall.
When to Plant Larkspur in Sutter County, CA
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.
Sutter County, California is in USDA Zone 9b. The average last spring frost is March 4 and the first fall frost is November 26, giving you a growing season of approximately 267 days.
At an elevation of 484 feet, Sutter County receives approximately 21.4 inches of rainfall annually with predominantly loam soil. Summer highs average 88°F, providing good warmth for Larkspur during the growing season.
Sutter County Soil Profile
Soil Type
Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Larkspur Planting Timeline — Sutter County, CA
Larkspur Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Bloom | December 3 | Dec 3 – Mar 11 |
| Fall Sowing | September 24 | Sep 24 – Oct 8 |
Plant 0.1" deep · 8" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Bloom |
| February | Bloom |
| March | Bloom |
| April | — |
| May | — |
| June | — |
| July | — |
| August | — |
| September | Fall Sowing |
| October | Fall Sowing |
| November | — |
| December | Bloom |
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 9b
📆 Growing Season
267 days in Sutter County
Growing Tips for Sutter 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 Sutter County, CA?
Sutter County is in Zone 9b with an average last frost of March 4. Plan your Larkspur planting based on this frost date — see the calendar above for exact timing.
What planting zone is Sutter County, CA?
Sutter County, California is in USDA Hardiness Zone 9b. The average last spring frost is March 4 and first fall frost is November 26.
When should I plant Larkspur in Sutter County, CA?
In Sutter County, CA, plant Larkspur after the last frost (around March 4) and before the first frost (around November 26). Best results when soil holds above 50°F.
What growing zone is Sutter County, CA for Larkspur?
Sutter County sits in USDA Zone 9b. Larkspur grows reliably in zones 2a through 10b, so it's a good fit here.
Can Larkspur grow in Sutter County's climate?
Yes — Larkspur grows well in Sutter County's temperate climate. Sutter County averages a 267-day frost-free season, with last frost around March 4 and first frost around November 26.
Your Sutter County Garden Planner — Free
A 22-page printable planner built for Sutter County (Zone 9b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.