When to Plant Chamomile in Box Elder, Montana (59521)

Location

Box Elder, Montana

ZIP Code

59521

USDA Zone

Last Frost

Friday, May 15, 2026

📅 Your 2026 Planting Dates

Start Seeds Indoors

Friday, April 3, 2026

Transplant Outdoors

Friday, May 29, 2026

Based on last frost Friday, May 15, 2026 · Zone 4a

Pro tip: Start Chamomile seeds indoors 6 weeks before your last frost date, then transplant outdoors around Friday, May 29, 2026.

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🌿 Plant Details

Scientific Name Matricaria chamomilla

Days to Maturity 60 days

☀️ Growing Requirements

☀️

Sun

Full Sun

💧

Water

Regular

Seeds typically germinate in 7-14 days

Ready to Plant Chamomile in Box Elder?

Get your seeds now so they're ready by Friday, April 3, 2026.

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Full Companion Planting Guide for Chamomile

See which plants help Chamomile thrive, which to keep away, and raised bed layout tips →

🛠️ Supplies You'll Need

🌱 Seed Starting Trays 🪴 Seed Starting Mix 💡 Grow Lights 🌡️ Heat Mat 🪵 Raised Garden Bed 🌍 Vegetable Garden Soil 🛠️ Hand Trowel Set 🚿 Watering Can

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🌾 Seed Saving Guide

🟢 Easy

✅ Open-pollinated — seeds grow true to parent

When to Harvest Seed

Let flowers dry completely on the plant — seeds form in the center of the dried flower.

Processing

Rub dried flower heads between palms over a bowl, then winnow to remove chaff.

Seed Viability

Up to 3 years when stored cool, dark, and dry.

Pro Tip

Chamomile self-sows freely — once established, you may not need to save seed at all.

Frequently Asked Questions

When should I plant Chamomile in Box Elder, Montana? +

In Box Elder (Zone 4a), start Chamomile seeds indoors around Friday, April 3, 2026 and transplant outdoors around Friday, May 29, 2026.

What is the last frost date for Box Elder, Montana? +

The average last spring frost date for Box Elder, Montana (ZIP 59521) is around Friday, May 15, 2026. This is based on NOAA climate normals for USDA Zone 4a.

How long does Chamomile take to grow? +

Chamomile typically matures in about 60 days from transplanting. In Box Elder, that means you can expect harvest around Friday, May 29, 2026 plus 60 days.

Should I start Chamomile indoors or direct sow in Montana? +

Chamomile should be started indoors 6 weeks before your last frost date. In Box Elder, that means starting around Friday, April 3, 2026.

📚 More Chamomile Planting Guides

🗺️

Chamomile in Montana

Zone-by-zone breakdown · Full state guide

→ 🌡️

Zone 4a Chamomile Guide

All cities in your zone · Avg dates

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Other Plants for Box Elder

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Growing Chamomile in Zone 4a

Chamomile (Matricaria chamomilla) is a popular garden vegetable. In Box Elder, Montana, which is in USDA Hardiness Zone 4a, you should start seeds indoors around Friday, April 3, 2026.

Your average last frost date is Friday, May 15, 2026. Plan to transplant your Chamomile seedlings outdoors around Friday, May 29, 2026, about 2 weeks after your last frost date.