About Sobkowich Greenhouses

At Sobkowich Greenhouses we are proud of our beginnings and where we have grown to today. With over 50 years of growing experience in the Niagara Region, we're the leading choice for high-quality Proven Winners® plants in Eastern Canada.

Family-Owned For 50 Years

Sobkowich Greenhouses is a family-run operation started by Ed Sobkowich Senior and his wife Estelle Sobkowich in 1964. Ed Sr was a fruit farmer looking to continue the growing season through the winter. They decided to grow hothouse tomatoes and the first 3 greenhouses were built on their Grimsby property.

Around 1972 the business evolved into bedding plants and is now a complete floriculture production farm.

Sobkowich Greenhouses has expanded to over 160,000 square feet under cover and our first 3 greenhouses are still part of our production space today.

Why Choose Us

Provider of High-Quality Plants from Proven Winners

See our extensive catalog of plants from the Proven Winners line including Annuals, Selections, Accents, and the new Proven Harvest line of fruits and vegetables.

Products  Product Availability

Growing Strong

From germinating seed to encouraging roots on cuttings, we are plant starters. Our primary focus is propagating spring annual young plants to supply the Canadian greenhouse market.

As one of 2 licensed Canadian propagators for Proven Winners North America, we provide plants that are unsurpassed in terms of flowering, growth habit, disease resistance, and garden performance.

Custom seeding, growing, and wholesale finished Annual Bedding plants to independent garden centres across Ontario helps to round out our seasons.

Where To Buy Our Products

Sobkowich Greenhouses, Growing Strong in Grimsby, ON

Sobkowich Greenhouses Propogates Proven Winners® Plants

Featured Products By Sobkowich Greenhouses


Proven Winners® Dahlia Virtuoso™

Proven Winners® Dahlia Virtuoso™

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Proven Winners® Heliotropium

Proven Winners® Heliotropium

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Proven Winners® Petunia Supertunia®

Proven Winners® Petunia Supertunia®

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View All Proven Winners® Products  Product Availability

(905) 945-8870