OSC Seeds is the largest wholly Canadian-owned and operated seed packet company, offering a full line of products including over 30 herbs, 250 vegetables, 240 annuals, and 100 perennials and biennials suitable for Canada’s various climates.

At OSC Seeds, our goal is provide Canadian gardeners with the best quality seed available at competitive pricing. To help support our customers, we offer in-depth information on planting and growing seeds in different Canadian climate zone

Over 125 Years of History

Our fifth-generation family business has over 125 years of growing history and is proud to be wholly Canadian-owned and operated. From our central facility in Kitchener, Ontario, we ship from coast to coast across Canada.

OSC Seeds began as a small store in Waterloo, Ontario, established in the late 1800’s shortly after the town’s founding. We are proud to continue to use P.O. Box 7 in Waterloo, Ontario.

The OSC Seeds main office and packaging plant is located in Kitchener’s Innovation District in close proximity to world-class organizations, while remaining close to our original home in Uptown Waterloo.

If you are looking to purchase our seed packets in the Waterloo area, our retail store in Uptown Waterloo is open and ready to serve you from 8:30 am to 6:00 pm Monday to Friday and from 8:30 am to 5:30 pm on Saturdays. Seeds and a wide range of horticultural products are for sale all year round at this location.

Our Quality Standards

Organic Certification

OSC Seeds holds an Organic Seed Processor Certification from The Centre for Systems Integration (CSI). We are a top source for imported Certified Organic Seeds in Canada.

To view our organic certificates, please view our Quality Standards page.

Germination Standards

The germination standards at OSC Seeds are among the most rigorous in the world. All our seeds are tested at Agriculture and Agri-Food Canada authorized labs to ensure that they meet or exceed Canadian seed standards.

OSC Terms of Sale

At OSC Seeds, we guarantee the purity and vitality of our seeds to the full amount of the purchase price.

We recognize that mistakes do occur. Therefore, it is mutually agreed that in no case shall OSC Seeds be liable for any more than the amount actually paid for the seed purchased. For more information, view our Terms of Sale here.

Thank you for your interest in OSC Seeds. If you have any questions about our products or our company, please feel free to contact us. We would be happy to help!

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