When to Plant Marjoram in Isabella, Minnesota (55607)

Location

Isabella, Minnesota

ZIP Code

55607

USDA Zone

Last Frost

Wednesday, May 20, 2026

📅 Your 2026 Planting Dates

Start Seeds Indoors

Wednesday, March 25, 2026

Transplant Outdoors

Wednesday, June 3, 2026

Based on last frost Wednesday, May 20, 2026 · Zone 3b

Pro tip: Start Marjoram seeds indoors 8 weeks before your last frost date, then transplant outdoors around Wednesday, June 3, 2026.

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🌿 Plant Details

Scientific Name Origanum majorana

Days to Maturity 60 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 Marjoram in Isabella?

Get your seeds now so they're ready by Wednesday, March 25, 2026.

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🤝 Good Companions

PepperTomatoBasilBean

🤝

Full Companion Planting Guide for Marjoram

See which plants help Marjoram 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

Allow flower clusters to dry completely on the plant before harvesting.

Processing

Strip dried flower clusters, crush gently to release tiny seeds, winnow lightly.

Seed Viability

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

Pro Tip

Marjoram seeds are very small — surface sow without covering when planting.

🪴

Raised Bed Planting Guides

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

Frequently Asked Questions

When should I plant Marjoram in Isabella, Minnesota? +

In Isabella (Zone 3b), start Marjoram seeds indoors around Wednesday, March 25, 2026 and transplant outdoors around Wednesday, June 3, 2026.

What is the last frost date for Isabella, Minnesota? +

The average last spring frost date for Isabella, Minnesota (ZIP 55607) is around Wednesday, May 20, 2026. This is based on NOAA climate normals for USDA Zone 3b.

How long does Marjoram take to grow? +

Marjoram typically matures in about 60 days from transplanting. In Isabella, that means you can expect harvest around Wednesday, June 3, 2026 plus 60 days.

Should I start Marjoram indoors or direct sow in Minnesota? +

Marjoram should be started indoors 8 weeks before your last frost date. In Isabella, that means starting around Wednesday, March 25, 2026.

📚 More Marjoram Planting Guides

🗺️

Marjoram in Minnesota

Zone-by-zone breakdown · Full state guide

→ 🌡️

Zone 3b Marjoram Guide

All cities in your zone · Avg dates

→

Other Plants for Isabella

Blackberry Blueberry Raspberry Strawberry Basil Chamomile Chives Cilantro Dill Lavender Lemon Balm Mint Oregano Parsley Rosemary Sage Tarragon Thyme Acorn Squash Artichoke Arugula Asparagus Beefsteak Tomato Beet Bell Pepper Bok Choy Broccoli Brussels Sprout Butternut Squash Cabbage Cantaloupe Carrot Cauliflower Cayenne Pepper Celery Cherry Tomato Chili Pepper Collard Green Common Bean Cucumber Eggplant Endive Fennel Garlic Grape Tomato Green Bean Habanero Pepper Head Lettuce Heirloom Tomato Honeydew Melon Jalapeño Pepper Kale Kohlrabi Leaf Lettuce Leek Lima Bean Mustard Okra Onion Parsnip Pea Poblano Pepper Pole Pea Potato Pumpkin Radicchio Radish Rhubarb Roma Tomato Rutabaga Serrano Pepper Shallot Snap Pea Snow Pea Spaghetti Squash Spinach Squash Sweet Corn Sweet Potato Swiss Chard Tomato Turnip Watermelon Zucchini Sunflower Marigold Zinnia Nasturtium Cosmos Echinacea (Coneflower) Petunia Black-eyed Susan Apple Tree Pear Tree Peach Tree Plum Tree Sweet Cherry Tree Lemon Tree Borage Lemongrass Ginger Stevia Tomatillo Edamame Fava Bean Mâche Mizuna Sorrel Shishito Pepper Banana Pepper Watermelon Radish Napa Cabbage Popcorn Broccoli Raab Catnip Valerian Lemon Verbena Bee Balm Anise Lovage Chervil Summer Savory Dahlia Snapdragon Pansy Sweet Pea Morning Glory Hollyhock Larkspur Bachelor Button Columbine Impatiens Salvia (Annual) Sweet Alyssum Celosia Lupine Verbena Elderberry Grape Vine Red Currant Gooseberry Serviceberry Fig Tree Avocado Tree Persimmon Tree Olive Tree

Growing Marjoram in Zone 3b

Marjoram (Origanum majorana) is a popular garden vegetable. In Isabella, Minnesota, which is in USDA Hardiness Zone 3b, you should start seeds indoors around Wednesday, March 25, 2026.

Your average last frost date is Wednesday, May 20, 2026. Plan to transplant your Marjoram seedlings outdoors around Wednesday, June 3, 2026, about 2 weeks after your last frost date.