Blog

🔍

🌱 Spring 2026 — Zone 3b Planting Guide

Here's everything you can plant during Spring 2026 in USDA Zone 3b. With a last frost around May 10 and first frost around September 22, you have a 135-day growing season to work with.

There are 184 planting activities across March, April, May.

Transplant Outdoors This Spring

PlantTypeWhenDays to Maturity
Acorn Squash Vegetable 80–100
Amaranth Vegetable 90–120
Angelica Herb 365–730
Arugula Vegetable 30–50
Asparagus Vegetable 730–1095
Bee Balm Herb 90–120
Belgian Endive Vegetable 110–150
Bok Choy Vegetable 40–60
Borage Herb 50–60
Broccoli Vegetable 60–90
Broccoli Rabe Vegetable 40–60
Brussels Sprouts Vegetable 90–130
Butternut Squash Vegetable 85–110
Cabbage Vegetable 60–100
Caraway Herb 365–450
Catnip Herb 60–80
Cauliflower Vegetable 55–100
Celeriac Vegetable 100–120
Celery Vegetable 80–120
Celtuce Vegetable 60–90
Chamomile Herb 60–90
Chard Vegetable 50–60
Chervil Herb 40–60
Chickpeas Vegetable 80–110
Chicory Vegetable 60–85
Chinese Cabbage Vegetable 50–70
Chives Herb 60–90
Cilantro Herb 40–60
Collard Greens Vegetable 55–75
Comfrey Herb 60–90
Cress Vegetable 14–21
Crookneck Squash Vegetable 45–60
Cucumber Vegetable 50–70
Delicata Squash Vegetable 80–100
Dill Herb 40–60
Echinacea Herb 120–180
Endive Vegetable 45–65
Escarole Vegetable 50–70
Fava Beans Vegetable 75–100
Garlic Chives Herb 60–90
Horehound Herb 75–90
Horseradish Vegetable 120–180
Hubbard Squash Vegetable 100–120
Hyssop Herb 70–90
Kabocha Vegetable 85–100
Kai Lan Vegetable 45–60
Kale Vegetable 50–70
Kohlrabi Vegetable 45–65
Komatsuna Vegetable 35–50
Leeks Vegetable 90–150
Lemon Balm Herb 60–70
Lentils Vegetable 80–110
Lettuce Vegetable 30–60
Lovage Herb 70–90
Mache Vegetable 40–60
Microgreens Vegetable 7–21
Mint Herb 60–90
Mizuna Vegetable 30–45
Mustard Greens Vegetable 30–50
Napa Cabbage Vegetable 55–75
Onion Vegetable 90–120
Pac Choi Vegetable 40–55
Parsley Herb 60–80
Patty Pan Squash Vegetable 45–60
Peas Vegetable 55–70
Peppers Vegetable 60–90
Pole Beans Vegetable 55–70
Potatoes Vegetable 70–120
Pumpkin Vegetable 85–120
Purslane Vegetable 40–60
Romanesco Vegetable 75–100
Savoy Cabbage Vegetable 70–110
Scallions Vegetable 50–70
Scarlet Runner Beans Vegetable 60–80
Shiso Vegetable 50–70
Snap Peas Vegetable 55–70
Snow Peas Vegetable 50–65
Sorrel Herb 40–60
Spaghetti Squash Vegetable 85–100
Spinach Vegetable 35–50
Squash (Summer) Vegetable 45–65
Squash (Winter) Vegetable 80–120
Sunchoke Vegetable 110–150
Sunflower Vegetable 70–100
Tatsoi Vegetable 35–50
Tomatoes Vegetable 60–85
Valerian Herb 120–180
Watercress Vegetable 40–60
Yarrow Herb 90–120
Zucchini Vegetable 45–60

Direct Sow This Spring

PlantTypeWhenDays to Maturity
Acorn Squash Vegetable 80–100
Amaranth Vegetable 90–120
Angelica Herb 365–730
Arugula Vegetable 30–50
Beets Vegetable 50–70
Belgian Endive Vegetable 110–150
Black Beans Vegetable 90–120
Bok Choy Vegetable 40–60
Borage Herb 50–60
Broccoli Vegetable 60–90
Broccoli Rabe Vegetable 40–60
Brussels Sprouts Vegetable 90–130
Butternut Squash Vegetable 85–110
Cabbage Vegetable 60–100
Caraway Herb 365–450
Carrots Vegetable 60–80
Cauliflower Vegetable 55–100
Celeriac Vegetable 100–120
Celery Vegetable 80–120
Celtuce Vegetable 60–90
Chamomile Herb 60–90
Chard Vegetable 50–60
Chervil Herb 40–60
Chickpeas Vegetable 80–110
Chicory Vegetable 60–85
Chinese Cabbage Vegetable 50–70
Cilantro Herb 40–60
Collard Greens Vegetable 55–75
Corn Vegetable 60–100
Cress Vegetable 14–21
Crookneck Squash Vegetable 45–60
Cucumber Vegetable 50–70
Daikon Vegetable 50–70
Delicata Squash Vegetable 80–100
Dill Herb 40–60
Edamame Vegetable 75–100
Endive Vegetable 45–65
Escarole Vegetable 50–70
Fava Beans Vegetable 75–100
Green Beans Vegetable 50–65
Hubbard Squash Vegetable 100–120
Kabocha Vegetable 85–100
Kai Lan Vegetable 45–60
Kale Vegetable 50–70
Kidney Beans Vegetable 85–110
Kohlrabi Vegetable 45–65
Komatsuna Vegetable 35–50
Leeks Vegetable 90–150
Lentils Vegetable 80–110
Lettuce Vegetable 30–60
Lima Beans Vegetable 60–90
Mache Vegetable 40–60
Microgreens Vegetable 7–21
Mizuna Vegetable 30–45
Mustard Greens Vegetable 30–50
Napa Cabbage Vegetable 55–75
Onion Vegetable 90–120
Pac Choi Vegetable 40–55
Parsley Herb 60–80
Parsnip Vegetable 100–130
Patty Pan Squash Vegetable 45–60
Peas Vegetable 55–70
Peppers Vegetable 60–90
Pole Beans Vegetable 55–70
Potatoes Vegetable 70–120
Pumpkin Vegetable 85–120
Purslane Vegetable 40–60
Radish Vegetable 22–35
Romanesco Vegetable 75–100
Rutabaga Vegetable 80–100
Salsify Vegetable 100–130
Savoy Cabbage Vegetable 70–110
Scallions Vegetable 50–70
Scarlet Runner Beans Vegetable 60–80
Shiso Vegetable 50–70
Snap Peas Vegetable 55–70
Snow Peas Vegetable 50–65
Sorrel Herb 40–60
Soybeans Vegetable 80–120
Spaghetti Squash Vegetable 85–100
Spinach Vegetable 35–50
Squash (Summer) Vegetable 45–65
Squash (Winter) Vegetable 80–120
Sunflower Vegetable 70–100
Sweet Corn Vegetable 60–90
Tatsoi Vegetable 35–50
Tomatoes Vegetable 60–85
Turnip Vegetable 40–60
Watercress Vegetable 40–60
Wax Beans Vegetable 50–65
Zucchini Vegetable 45–60

Harvest This Spring

PlantTypeWhenDays to Maturity
Cress Vegetable 14–21
Microgreens Vegetable 7–21
Radish Vegetable 22–35
🌱

Plan Your Garden with Confidence

Get our free Garden Planner — organize your planting dates for Zone 3b, track your crops, and plan your garden season from seed to harvest.

Get Your Free Garden Planner →

Free download. Plan your entire garden season in minutes.

Follow us online

Contact Us | Privacy Policy | Terms and Conditions