When to Plant Raspberry in Knife River, Minnesota (55609)

Location

Knife River, Minnesota

ZIP Code

55609

USDA Zone

Last Frost

Tuesday, May 5, 2026

📅 Your 2026 Planting Dates

Direct Sow Outdoors

Tuesday, April 7, 2026

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

Pro tip: Sow Raspberry directly outdoors 4 weeks before your last frost date.

Add to Calendar (.ics)

🌿 Plant Details

Scientific Name Rubus idaeus

Days to Maturity 365 days

☀️ Growing Requirements

☀️

Sun

Full Sun

💧

Water

Regular

Seeds typically germinate in 7-14 days

Ready to Plant Raspberry in Knife River?

Get your seeds now so they're ready by Tuesday, April 7, 2026.

🛒 Buy on Amazon 🌿 True Leaf Market

* Affiliate links — we may earn a small commission at no extra cost to you.

🛠️ Supplies You'll Need

🌿 Fruit Tree Fertilizer 🕸️ Garden Netting 🚿 Watering Can

* Affiliate links — we may earn a small commission at no extra cost to you.

Common Raspberry Varieties

Popular cultivars to look for at your local nursery or seed supplier.

Heritage

everbearing

The most popular everbearing red raspberry; reliable, productive, and widely adapted.

Caroline

everbearing

Large-fruited fall-bearing red raspberry with exceptional flavor; highly disease resistant.

Anne

everbearing

Golden-yellow everbearing raspberry with sweet, mild flavor; unusually ornamental.

Jewel

summer-bearing

Black raspberry variety with rich, complex flavor unlike red types; excellent for jam.

🌾 Seed Saving Guide

🪴 Vegetative propagation

Propagate vegetatively, not by seed

Propagate by root cuttings or suckers — seeds rarely grow true to variety.

Dig up rooted suckers in spring or fall and replant for the fastest, truest propagation.

Frequently Asked Questions

When should I plant Raspberry in Knife River, Minnesota? +

In Knife River (Zone 4b), direct sow Raspberry outdoors around Tuesday, April 7, 2026.

What is the last frost date for Knife River, Minnesota? +

The average last spring frost date for Knife River, Minnesota (ZIP 55609) is around Tuesday, May 5, 2026. This is based on NOAA climate normals for USDA Zone 4b.

How long does Raspberry take to grow? +

Raspberry typically matures in about 365 days from direct sowing. In Knife River, that means you can expect harvest around Tuesday, April 7, 2026 plus 365 days.

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

Raspberry does best when direct sown outdoors. In Knife River, sow directly around Tuesday, April 7, 2026.

📚 More Raspberry Planting Guides

🗺️

Raspberry in Minnesota

Zone-by-zone breakdown · Full state guide

→ 🌡️

Zone 4b Raspberry Guide

All cities in your zone · Avg dates

→

Other Plants for Knife River

Blackberry Blueberry Strawberry Basil Chamomile Chives Cilantro Dill Lavender Lemon Balm Marjoram 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 Raspberry in Zone 4b

Raspberry (Rubus idaeus) is a popular garden vegetable. In Knife River, Minnesota, which is in USDA Hardiness Zone 4b, you should direct sow seeds around Tuesday, April 7, 2026.

Your average last frost date is Tuesday, May 5, 2026. Raspberry grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.