When to Plant Oregano in Eagle River, Wisconsin (54521)

Location

Eagle River, Wisconsin

ZIP Code

54521

USDA Zone

Last Frost

Tuesday, May 5, 2026

📅 Your 2026 Planting Dates

Start Seeds Indoors

Tuesday, March 10, 2026

Transplant Outdoors

Tuesday, May 19, 2026

Based on last frost Tuesday, May 5, 2026 · Zone 4b

Pro tip: Start Oregano seeds indoors 8 weeks before your last frost date, then transplant outdoors around Tuesday, May 19, 2026.

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🌿 Plant Details

Scientific Name Origanum vulgare

Days to Maturity 80 days

Mature Height 12-24"

Spread 18"

Type Spreading

Fruit Size N/A

☀️ Growing Requirements

☀️

Sun

Full Sun (6+ hours)

💧

Water

Low to Moderate

↔️

Spacing

12" apart

🌱

Planting Depth

0.125" deep

Seeds typically germinate in 7-14 days

Ready to Plant Oregano in Eagle River?

Get your seeds now so they're ready by Tuesday, March 10, 2026.

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🤝 Good Companions

PepperTomatoBasil

🤝

Full Companion Planting Guide for Oregano

See which plants help Oregano 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 flower clusters dry fully on the plant — tiny seeds form in dried calyxes.

Processing

Strip dried clusters, rub between fingers over a bowl, winnow lightly to remove chaff.

Seed Viability

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

Pro Tip

Greek oregano from seed may vary in flavor intensity. Propagate by cuttings for culinary consistency.

🪴

Raised Bed Planting Guides

A 4×8 bed fits 32 plants of Oregano. See plant counts, spacing grids, and companion pairings for every bed size →

Frequently Asked Questions

When should I plant Oregano in Eagle River, Wisconsin? +

In Eagle River (Zone 4b), start Oregano seeds indoors around Tuesday, March 10, 2026 and transplant outdoors around Tuesday, May 19, 2026.

What is the last frost date for Eagle River, Wisconsin? +

The average last spring frost date for Eagle River, Wisconsin (ZIP 54521) is around Tuesday, May 5, 2026. This is based on NOAA climate normals for USDA Zone 4b.

How long does Oregano take to grow? +

Oregano typically matures in about 80 days from transplanting. In Eagle River, that means you can expect harvest around Tuesday, May 19, 2026 plus 80 days.

Should I start Oregano indoors or direct sow in Wisconsin? +

Oregano should be started indoors 8 weeks before your last frost date. In Eagle River, that means starting around Tuesday, March 10, 2026.

📚 More Oregano Planting Guides

🗺️

Oregano in Wisconsin

Zone-by-zone breakdown · Full state guide

→ 🌡️

Zone 4b Oregano Guide

All cities in your zone · Avg dates

→

Other Plants for Eagle River

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Growing Oregano in Zone 4b

Oregano (Origanum vulgare) is a popular garden vegetable. In Eagle River, Wisconsin, which is in USDA Hardiness Zone 4b, you should start seeds indoors around Tuesday, March 10, 2026.

Your average last frost date is Tuesday, May 5, 2026. Plan to transplant your Oregano seedlings outdoors around Tuesday, May 19, 2026, about 2 weeks after your last frost date.