When to plant Mint in Mineral County County,
Mineral County County's short 113-day growing season means one Mint planting between June 6 and June 20. No fall crop in Zone 6a.
When to Plant Mint in Mineral County, MT
Mineral County, Montana gardeners: here's your June plan
Each item below is timed to Mineral County, Montana's frost dates and soil temperatures. Skip nothing, stress about nothing.
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Move mint into the garden
Plant tomatoes deep — bury the stem up to the first true leaves to grow extra roots. Everything else goes in at the same depth it grew in the tray.
Mint is a vigorous perennial herb with refreshing, aromatic leaves used in teas, cocktails, and cooking. It spreads aggressively by underground runners.
Mineral County, Montana is in USDA Zone 6a. The average last spring frost is May 30 and the first fall frost is September 20, giving you a growing season of approximately 113 days.
At an elevation of 5,389 feet, Mineral County receives approximately 12.5 inches of rainfall annually with predominantly loam soil. Summer highs average 84°F, so choose short-season varieties of Mint to ensure they mature before fall. With low rainfall, drip irrigation is essential for growing Mint successfully. Mulch heavily to conserve soil moisture.
Mineral County Soil Profile
Soil Type
Loam
Soil pH
6.7-7.7
Drainage
Well Drained
Mint 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.
Soil Compatibility in Mineral County
How your county's soil matches Mint's growing requirements.
Soil pH
Your soil pH (6.7–7.7) is more alkaline than Mint prefers (6.0–7.0). Add sulfur or peat moss to lower pH.
Soil Texture
The loam soil in Mineral County is excellent for Mint — good drainage, moisture retention, and nutrient holding capacity.
Drainage
Mint is a heavy drinker but your soil drains very quickly. Mulch heavily and consider drip irrigation.
Organic Matter
Organic matter is moderate (2.4%). Annual compost additions will help Mint.
How to Plant Mint
Succession Planting Mint
Sow every 6.9 weeks. Last sowing by Jun 22 to harvest before frost.
Mint Water Budget
Water stress score is 6/10 — consider drought-tolerant varieties and mulching
Monthly Watering Guide for Mint
Mint needs approximately 0.7 inches of water per week (3" per month). Here's how your county's rainfall compares month by month.
| Month | Mint Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 0.9" | 0" | ❄️ Dormant |
| Feb | — | 0.7" | 0" | ❄️ Dormant |
| Mar | — | 1" | 0" | ❄️ Dormant |
| Apr | — | 1.1" | 0" | ❄️ Dormant |
| May | 3" | 1.6" | 1.4" | 💧 Light watering |
| Jun | 3" | 0.9" | 2.1" | 🚿 Regular watering |
| Jul | 3" | 1.2" | 1.8" | 🚿 Regular watering |
| Aug | 3" | 1.3" | 1.7" | 🚿 Regular watering |
| Sep | 3" | 1.1" | 1.9" | 🚿 Regular watering |
| Oct | — | 1.2" | 0" | ❄️ Dormant |
| Nov | — | 0.9" | 0" | ❄️ Dormant |
| Dec | — | 0.6" | 0" | ❄️ Dormant |
Water needs are for active growing months only (May–Sep in Mineral County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Mint Heat Requirements (GDD)
What are Growing Degree Days (GDD)?
Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" — every day above 50°F deposits warmth that helps your plants grow.
Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.
Mint Planting Timeline — Mineral County, MT
Mint Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | June 6 | Jun 6 – Jun 20 |
| Harvest | August 8 | Aug 8 – Oct 17 |
Plant 0.5" deep · 8" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | — |
| May | — |
| June | Transplant Outdoors |
| July | — |
| August | Harvest |
| September | Harvest |
| October | Harvest |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Partial Shade (3-6 hours)
💧 Water
0.7"/week · 1-2 times/week
📅 Days to Maturity
60–90 days
🧪 Soil pH
Needs 6–7 · Your soil: too_alkaline
🗺️ USDA Zone
Zone 6a
📆 Growing Season
113 days in Mineral County
Growing Tips for Mint in Mineral County
Direct sow Mint outdoors after May 30 in Mineral County when soil has warmed and frost danger has passed.
General growing tips
Always grow mint in containers or with underground barriers to control spreading. Harvest regularly to keep plants compact. Cut plants back in late summer for a fresh fall flush.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Mint in Other Locations
Frequently Asked Questions
When should I plant Mint in Mineral County, MT?
Mineral County is in Zone 6a with an average last frost of May 30. Plan your Mint planting based on this frost date — see the calendar above for exact timing.
What planting zone is Mineral County, MT?
Mineral County, Montana is in USDA Hardiness Zone 6a. The average last spring frost is May 30 and first fall frost is September 20.
When should I plant Mint in Mineral County County, ?
In Mineral County County, , plant Mint after the last frost (around May 30) and before the first frost (around September 20). Best results when soil holds above 50°F.
What growing zone is Mineral County County, for Mint?
Mineral County County sits in USDA Zone 6a. Mint grows reliably in zones 3a through 10b, so it's a good fit here.
Can Mint grow in Mineral County County's climate?
Yes — Mint grows well in Mineral County County's temperate climate. Mineral County County averages a 113-day frost-free season, with last frost around May 30 and first frost around September 20.
Your Mineral County Garden Planner — Free
A 22-page printable planner built for Mineral 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.