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When to Plant Anise in Powder River County, MT

Powder River County, Montana Zone 4b May

May in the garden — Powder River County, Montana

We've pulled the most time-sensitive tasks for Powder River County, Montana this May and put them front and centre. Tackle them in order.

Avg. last frost May 15
Avg. first frost September 22
Soil temp (4") 38°F
Watering High
Pest pressure Low
Daylight 14.7 hrs
  1. Plant out anise

    Water the tray well an hour before you transplant. Roots slide out cleanly and settle in faster.

  2. Seed anise outdoors

    Your soil is 38°F — warm enough for these to germinate without babying.

Looking ahead to June
  • Starting indoors: anise
  • Fall sowing: anise

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Anise is an annual herb grown for its licorice-flavored seeds and leaves. The seeds are used in baking, liqueurs, and traditional medicine worldwide.

Powder River County, Montana is in USDA Zone 4b. The average last spring frost is May 15 and the first fall frost is September 22, giving you a growing season of approximately 130 days.

At an elevation of 6,328 feet, Powder River County receives approximately 19.4 inches of rainfall annually with predominantly loam soil. Summer highs average 83°F, so choose short-season varieties of Anise to ensure they mature before fall. With low rainfall, drip irrigation is essential for growing Anise successfully. Mulch heavily to conserve soil moisture.

Powder River County, MT (Zone 4b) Short season
130 days
Last Spring Frost May 15
130 growing days
First Fall Frost September 22

Powder River County Soil Profile

Soil Type

Loam

Soil pH

6.5-7.9

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Start indoors: Mar 30 Transplant: May 4 🍅 Harvest: Aug 3 – Sep 28
Recommended (50%) ✗ May not fit
Start indoors: Apr 3 Transplant: May 8 🍅 Harvest: Aug 7 – Oct 2
Safe Start (90%) ✗ May not fit
Start indoors: Apr 17 Transplant: May 22 🍅 Harvest: Aug 21 – Oct 16

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 Powder River County

How your county's soil matches Anise's growing requirements.

Soil pH

Your soil pH (6.5–7.9) overlaps with Anise's range (6.0–7.5), though not a perfect match.

Soil Texture

The loam soil in Powder River County is excellent for Anise — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.7%). Annual compost additions will help Anise.

How to Plant Anise

0.5"
Planting Depth
8"
Between Plants
12"
Between Rows

Fall planting: Sow 12 weeks before your first frost date for a fall harvest.

Plant Water Budget

Plant needs
0.4″/week
Rainfall provides
0.6″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Drought risk

Water stress score is 8/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Anise

Anise needs approximately 0.4 inches of water per week (1.7" per month). Here's how your county's rainfall compares month by month.

Month Anise Needs Rainfall You Supplement Action
Jan 1.4" 0" ❄️ Dormant
Feb 1" 0" ❄️ Dormant
Mar 1.8" 0" ❄️ Dormant
Apr 2.2" 0" ❄️ Dormant
May 1.7" 2.7" 0" ✅ Rainfall sufficient
Jun 1.7" 1.3" 0.4" 💧 Light watering
Jul 1.7" 1.6" 0.1" 💧 Light watering
Aug 1.7" 1.8" 0" ✅ Rainfall sufficient
Sep 1.7" 1.6" 0.1" 💧 Light watering
Oct 1.6" 0" ❄️ Dormant
Nov 1.3" 0" ❄️ Dormant
Dec 1.3" 0" ❄️ Dormant

Water needs are for active growing months only (May–Sep in Powder River County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Anise 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.

Anise needs ~1,286 GDD — county provides 1,592 GDD Good fit

Anise Planting Timeline — Powder River County, MT

Anise Planting Calendar

Activity When Date Range
Start Indoors April 3 Apr 3 – Apr 17
Transplant Outdoors May 8 May 8 – May 22
Direct Sow May 8 May 8 – May 29
Harvest August 7 Aug 7 – Oct 2
Fall Sowing June 30 Jun 30 – Jul 14

Plant 0.5" deep · 8" apart · Rows 12" apart

Month-by-Month Timeline

MonthActivities
January
February
March
April Start Indoors
May Transplant Outdoors Direct Sow
June Fall Sowing
July Fall Sowing
August Harvest
September Harvest
October Harvest
November
December

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.4"/week · Natural rainfall sufficient

📅 Days to Maturity

90–120 days

🧪 Soil pH

Needs 6–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 4b

📆 Growing Season

130 days in Powder River County

Growing Tips for Anise in Powder River County

Direct sow Anise outdoors after May 15 in Powder River County when soil has warmed and frost danger has passed.

Your 130.0-day growing season in Powder River County is tight for Anise (90.0-120.0 days to maturity). Start indoors and choose early-maturing varieties.

Common pests for Anise in this region include carrot rust fly and parsleyworm. Use row covers early in the season and inspect plants weekly.

General growing tips

Direct sow after last frost as anise has a taproot. Harvest seeds when they turn brown. Plants may need staking. The feathery leaves are also edible with a mild anise flavor.

Companion Planting

Good Companions

Avoid Planting Near

  • Carrots

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Anise in Powder River County, MT?

Powder River County is in Zone 4b with an average last frost of May 15. Plan your Anise planting based on this frost date — see the calendar above for exact timing.

What planting zone is Powder River County, MT?

Powder River County, Montana is in USDA Hardiness Zone 4b. The average last spring frost is May 15 and first fall frost is September 22.

🌱

Your Powder River County Garden Planner — Free

A 24-page printable planner built for Powder River 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.

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Powder River County, MT. Local conditions may vary. Last updated: May 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.