When to Plant Hyssop in Kittson County, MN
Hyssop is a semi-evergreen perennial herb with intense blue flower spikes that attract bees and butterflies. It has a minty, slightly bitter flavor used in liqueurs and teas.
Kittson County, Minnesota is in USDA Zone 3a. The average last spring frost is May 14 and the first fall frost is September 30, giving you a growing season of approximately 139 days.
At an elevation of 778 feet, Kittson County receives approximately 40.2 inches of rainfall annually with predominantly silt loam soil. Summer highs average 78°F, so choose short-season varieties of Hyssop to ensure they mature before fall.
Kittson County Soil Profile
Soil Type
Silt Loam
Soil pH
6.2-7.3
Drainage
Well Drained
Plant Planting Risk Windows
Percentages indicate frost risk at transplant. The 70% safe window means there is a 30% chance of frost after transplant — suitable for cold-hardy crops or gardeners with frost protection. The 90% safe window is best for tender plants.
Plant Water Budget
Hyssop Planting Timeline — Kittson County, MN
Hyssop Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | May 21 | May 21 – Jun 4 |
| Harvest | July 30 | Jul 30 – Sep 24 |
Plant 0.5" deep · 8" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | — |
| May | Transplant Outdoors |
| June | Transplant Outdoors |
| July | Harvest |
| August | Harvest |
| September | Harvest |
| October | — |
| November | — |
| December | — |
Growing Conditions
Sun
Full Sun (6-8+ hours)
Water
Low — drought tolerant
Days to Maturity
70–90 days
Soil pH
6 – 8
USDA Zone
Zone 3a
Growing Season
139 days
Growing Tips for Kittson County
Start seeds indoors or direct sow in spring. Prune back in early spring to encourage bushy growth. Hyssop is drought-tolerant once established and thrives in poor soil.
Companion Planting
Good Companions
Avoid Planting Near
Level Up Your Garden
Hyssop in Other Locations
Frequently Asked Questions
When should I plant Hyssop in Kittson County, MN?
Kittson County is in Zone 3a with an average last frost of May 14. Plan your Hyssop planting based on this frost date — see the calendar above for exact timing.
What planting zone is Kittson County, MN?
Kittson County, Minnesota is in USDA Hardiness Zone 3a. The average last spring frost is May 14 and first fall frost is September 30.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Kittson County gardeners in Zone 3a organize planting dates, track what's growing, and never miss a planting window.
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