When to plant Valerian in Stevens County, MN
Stevens County's 157-day season only supports one Valerian planting per year. Sow between May 9 and May 23 for the best chance at full maturity before October 6.
When to Plant Valerian in Stevens County, MN
Valerian is a tall perennial herb with fragrant white or pink flower clusters, valued for its root which is used as a natural sleep aid. It attracts pollinators and earthworms.
Stevens County, Minnesota is in USDA Zone 4b. The average last spring frost is May 2 and the first fall frost is October 6, giving you a growing season of approximately 157 days.
At an elevation of 1,259 feet, Stevens County receives approximately 37.3 inches of rainfall annually with predominantly silt loam soil. Summer highs average 81°F, so choose short-season varieties of Valerian to ensure they mature before fall.
Stevens County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Valerian Planting Timeline — Stevens County, MN
Valerian Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | May 9 | May 9 – May 23 |
| Harvest | September 12 | Sep 12 – Oct 3 |
Plant 0.5" deep · 8" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | — |
| May | Transplant Outdoors |
| June | — |
| July | — |
| August | — |
| September | Harvest |
| October | Harvest |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Partial Shade (3-6 hours)
💧 Water
Moderate — regular watering
📅 Days to Maturity
120–180 days
🧪 Soil pH
Needs 5.5–7 · Your soil: N/A
🗺️ USDA Zone
Zone 4b
📆 Growing Season
157 days in Stevens County
Growing Tips for Stevens County
Start seeds indoors and transplant after last frost. Harvest roots in fall of the second year. Deadhead flowers unless you want self-seeding. Cats are attracted to valerian root.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Valerian in Other Locations
Frequently Asked Questions
When should I plant Valerian in Stevens County, MN?
Stevens County is in Zone 4b with an average last frost of May 2. Plan your Valerian planting based on this frost date — see the calendar above for exact timing.
What planting zone is Stevens County, MN?
Stevens County, Minnesota is in USDA Hardiness Zone 4b. The average last spring frost is May 2 and first fall frost is October 6.
When should I plant Valerian in Stevens County, MN?
In Stevens County, MN, plant Valerian after the last frost (around May 2) and before the first frost (around October 6). Best results when soil holds above 50°F.
What growing zone is Stevens County, MN for Valerian?
Stevens County sits in USDA Zone 4b. Valerian grows reliably in zones 3a through 9b, so it's a good fit here.
Can Valerian grow in Stevens County's climate?
Yes — Valerian grows well in Stevens County's temperate climate. Stevens County averages a 157-day frost-free season, with last frost around May 2 and first frost around October 6.
Your Stevens County Garden Planner — Free
A 22-page printable planner built for Stevens County (Zone 4b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.