What this site covers
HarvestWindow focuses on three interconnected areas of backyard food production: knowing when to plant, how to build and maintain healthy soil, and how to manage the garden across multiple seasons without depleting the ground.
Canada's climate zones range from 0 in the far north to 8b on parts of the BC coast, according to the Agriculture and Agri-Food Canada Plant Hardiness Zone map. Most of the country's home gardeners fall in Zones 3 through 6, which shapes everything from last-frost dates to the viability of overwintering crops. Content here is written with that range in mind, noting where zone differences matter.
Editorial approach
Articles are written in an informational style. The aim is to explain how and why something works, not just what to do — so that gardeners can adapt advice to their specific location, soil type, and available time.
Where specific numbers are given (frost dates, temperatures, pH ranges), the source is cited or the range is kept deliberately approximate to avoid overstating precision. Gardening involves a significant degree of local variation, and any general guidance should be checked against provincial or regional extension resources.
Sources and references
The site draws on publicly available information from Agriculture and Agri-Food Canada, provincial extension programs (including those from Ontario, BC, and Alberta), and internationally recognized horticultural organisations. External links go to primary sources wherever possible.
Useful government references include:
- Agriculture and Agri-Food Canada — crop data, hardiness zones, soil information
- Ontario Ministry of Agriculture, Food and Rural Affairs — planting guides
- BC Ministry of Agriculture — Soil Nutrients
- Environment and Climate Change Canada — weather and climate data
Contact
Questions or corrections can be submitted through the contact form on the home page. Responses are not guaranteed but all messages are read.
Disclaimer
Information on HarvestWindow is provided for general informational purposes. It does not constitute professional agricultural or horticultural advice. Results in any individual garden will vary based on local conditions, soil quality, weather, and other factors outside the scope of general guidance. For site-specific recommendations, consult a local extension office or certified agrologist.
Last updated: May 2026