To seed in advance for fall, winter, and spring.
Advancing seeds for fall, winter, and spring gardens means starting or preparing seeds early—either by sowing, pre-seeding, or transplanting—so that you maximize your growing time, especially in climates with short seasons like much of Canada.
Here’s a breakdown of which seeds you can advance (start early or pre-seed) for Fall, Winter, and Spring harvests and how to do it:
Fall Garden (Plant in Summer for Fall Harvest)
Start seeds in July–August, either directly in the garden or indoors for transplanting.
✅ Great seeds to advance:
- Leafy Greens: Kale, spinach, Swiss chard, mustard greens, arugula
- Root Vegetables: Carrots, beets, radishes, turnips
- Brassicas: Broccoli, cabbage, cauliflower, Brussels sprouts
🧑🌾 Tips:
- Pre-seed indoors or under shade during hot summer.
- Harden off seedlings before transplanting in cooler fall soil.
- Use row covers or cold frames to extend the season into late fall.
Creating a Winter Garden from seed involves selecting hardy, cold-tolerant crops that can either be sown in late summer/early fall for winter harvest or overwintered for early spring harvest. Here's a list of seed varieties ideal for a winter garden, especially in Canadian and northern U.S. zones:
🌱 Winter Garden Seed Varieties
🥬 Leafy Greens
- Kale (‘Winterbor’, ‘Red Russian’) – Extremely cold-hardy.
- Spinach (‘Bloomsdale Long Standing’, ‘Giant Winter’) – Sweetens with frost.
- Swiss Chard – Survives mild winters with mulch.
- Mâche (Corn Salad) – Very cold-tolerant; perfect for salad greens.
- Claytonia (Miner’s Lettuce) – Thrives in cool, damp conditions.
🥕 Root Vegetables
- Carrots (‘Napoli’, ‘Merida’) – Can be overwintered in the ground with mulch.
- Beets – Early fall sowing gives sweet winter roots.
- Turnips – Fast-growing and frost-tolerant.
- Parsnips – Require frost to develop flavor; sow midsummer.
- Rutabaga – Cold-hardy and stores well.
🥦 Brassicas
- Cabbage (‘January King’, ‘Wintergreen’) – Overwinters with protection.
- Broccoli (‘Purple Sprouting’, ‘Calabrese’) – Best for overwintering in mild climates.
- Brussels Sprouts – Improves with frost.
🌿 Herbs
- Parsley – Cold-hardy biennial.
- Chives – Hardy perennial, regrows early in spring.
- Thyme, Oregano, and Sage – Hardy perennials in many zones.
🧤 Tips for Winter Gardening Success
- Use Cold Frames or Row Covers to extend harvest and protect seedlings.
- Mulch heavily to insulate soil and root crops.
- Choose short-day or overwintering varieties specifically labeled for cold climates.
- Succession plant in late summer (August–September) for a steady supply through winter.
🌱 Spring Garden (Start in Late Winter or Very Early Spring)
Advance seeds indoors in February–March to transplant after the last frost.
✅ Ideal for seed advancement:
- Tomatoes, peppers, eggplant (start 6–8 weeks before last frost)
- Brassicas (broccoli, cabbage, cauliflower)
- Herbs: Parsley, dill, thyme
- Lettuce, onions, leeks (early starters)
- Peas: Soak and pre-sprout for fast germination
💡 Tips:
- Use grow lights or sunny windowsills.
- Harden off plants before transplanting outdoors.
- Use cold frames to get an early start in the ground.