What to Do in the Garden in October (Canada)

Put beds to bed

• Remove finished annual vegetables; compost healthy debris and discard diseased material.
• Spread finished compost and top up mulch on beds (no-till plots especially benefit; 10-15 cm / 4-6 in of organic mulch).
• Prune out spent (second-year) raspberry canes.
• Cover strawberry crowns with clean straw or leaf mulch before deep cold.
• Consider leaving healthy perennial stems and seed heads standing for overwintering pollinators and birds — Toronto Master Gardeners endorse a lighter fall cleanup.

Protect tender plants

• Shelter tender shrubs (roses, newly planted cedars) with burlap screens, mulch towers, cardboard, or blankets before hard freeze-up.
• Mound mulch or soil over the base of tender roses after the ground starts to freeze.
• Finish deep-watering evergreens if the ground is still open.

Store and maintain

• Drain and store hoses and rain barrels; blow out or drain irrigation lines.
• Clean, sharpen, oil, and store tools; wash pots and trays so they're disease-free for spring.
• Bag or corral fallen leaves — shredded leaves make excellent free mulch and compost browns.
• Start microgreens indoors again for winter greens.

Regional notes

Prairie gardeners should finish protection tasks early in October — freeze-up can come fast. Southern Ontario and Maritime gardeners often have until late October (Toronto Master Gardeners' put-to-bed guidance is aimed at exactly this window), while coastal BC gardeners may still be harvesting winter crops and planting garlic rather than shutting down.

Sources

Reviewed 2026-07-18. We cite university Extension, government, and established horticultural sources — and never invent pesticide rates or dangerous treatments.

• Gardening at USask — Gardening Timeline (October) — October: top up mulch on no-till beds, put down compost, prune raspberry canes, cover strawberry crowns and tender plants with mulch, store tools/pots/equipment, start microgreens indoors
• Gardening at USask — Preparing your garden for winter — Use burlap, mulch towers, cardboard or blankets to protect tender perennial shrubs (roses, new cedars); save fall leaves as organic matter for beds
• Toronto Master Gardeners — Putting the Garden to Bed guide — Fall put-to-bed practice for southern Ontario gardens, including leaving healthy stems/seed heads for overwintering wildlife

Keep going