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Writer's pictureWaterloo Gardeners

September Sowing: A Gardener's Guide to Planting in Ontario

As the vibrant hues of summer start to wane, September ushers in a new chapter for Ontario gardeners. While autumn whispers of impending coolness, it's also a time of opportunity for those who love to dig in the soil. In this guide, we'll embark on a journey through the possibilities of what you can plant in Ontario during September, extending the beauty of your garden into the fall.


Garlic bulb
Garlic

Cool-Season Vegetables:

Imagine the joy of harvesting fresh produce from your garden well into the fall. September is the ideal time to sow cool-season vegetables like spinach, lettuce, kale, and radishes. The cooler temperatures enhance their flavour and texture.

Perennials and Bulbs:

The promise of spring begins in September. Planting perennials like tulips, daffodils, and crocuses now ensures a burst of colour when the world awakens from its winter slumber. It's an investment in the future beauty of your garden.


Garlic Planting for Spring Harvest:

There's a certain magic in planting garlic in the fall. As the temperatures drop, cloves take root, establishing themselves for a spring harvest. The aromatic allure of fresh garlic in your dishes awaits.


Cover Crops for Soil Health:

Beneath the surface, your garden is alive with a bustling community of microorganisms. Planting cover crops like clover or winter rye in September not only protects the soil from erosion but also enriches it, providing a banquet for beneficial soil organisms.


Fall-Flowering Perennials:

Extend the beauty of your garden well into autumn by introducing fall-flowering perennials like asters and chrysanthemums. These resilient blooms defy the changing season, painting your garden with a palette of warm tones.


As the days grow shorter and the air carries a hint of crispness, September beckons gardeners to continue their horticultural journey. Whether you're sowing the seeds of future harvests, planning for a vibrant spring, or nurturing your garden's soil health, this month is a canvas for your gardening aspirations. Embrace the autumnal rhythm, and let your garden flourish in the golden glow of September.


Sources:

  • Ontario Ministry of Agriculture, Food and Rural Affairs (OMAFRA)

  • Royal Horticultural Society (RHS)

  • University of Guelph - Ontario CropIPM

  • Ontario Soil and Crop Improvement Association

  • Toronto Master Gardeners

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