Greenhouse Greenhouse Success Stories

Darby McGrath on Canada’s Greenhouse Seed Supply Gap and What Vineland Is Doing About It

Darby McGrath, Vice President of Research and Development at Vineland Research and Innovation Centre, described how the not-for-profit operates across a 200-acre campus in Vineland Station, Ontario, with six distinct research divisions and up to 100 staff.

Key Takeaways

  • Darby McGrath, Vice President of Research and Development at Vineland Research and Innovation Centre, described how the not-for-profit operates across a 200-acre campus in Vineland Station, Ontario, with six distinct research divisions and up to 100 staff.
  • McGrath flagged that over 90% of plant breeders' rights filings in Canadian horticultural crops originate outside Canada, and that roughly three companies supply approximately 80% of tomato seed imports – a supply chain concentration he called a growing strategic risk.
  • Strawberries have emerged as the leading new greenhouse crop opportunity in Canada, though available genetics were largely developed for non-Canadian growing conditions.
  • Vineland opened an Advanced Pathology Lab with six near-quarantine growth rooms to conduct disease challenges and third-party product evaluations safely on campus.
  • McGrath highlighted near-term results from Vineland's Fusarium research in greenhouse peppers as one of his proudest recent team achievements, with findings expected to help growers identify and address the root cause of the disease.

Darby McGrath Flags Canada's Greenhouse Seed Supply as a Strategic Blind Spot

Darby McGrath, Vice President of Research and Development at Vineland Research and Innovation Centre, has drawn attention to a structural vulnerability in Canada's horticulture sector: the country relies almost entirely on international companies for the seed genetics that power its greenhouse industry. Speaking on the Greenhouse Success Stories podcast, McGrath noted that roughly three companies supply approximately 80% of tomato seed imports into Canada, and that over 90% of plant breeders' rights filings in horticultural crops come from outside the country.

“It is a little bit of a blind spot for us with respect to supply chains,” McGrath said. “And of course, we're living in a geopolitical context that is bringing a lot of things to the forefront that historically maybe we've not really had to pay attention to.”

About Vineland Research and Innovation Centre

Vineland Research and Innovation Centre is a not-for-profit organization partially funded by the Province of Ontario through a transfer payment agreement. It also manages Agricultural Research and Innovation Ontario properties. The organization operates a 200-acre campus in Vineland Station with between 80 and 100 employees depending on the season.

Its mandate is to bridge academic research and commercial application for Ontario's horticulture sector – identifying market gaps, developing new practices and processes, managing intellectual property, and collaborating with universities including the University of Guelph, Brock University, University of Toronto, and University of Waterloo.

Six Research Divisions

  • Crop Enhancement and Adaptation – genetics, genomics, trait development, bioinformatics, and breeding
  • Consumer Sensory and Market Insights – a trained sensory panel, food technology lab, and market intelligence
  • Plant Responses and Environment – production systems, urban trees, soils, and substrates
  • Biological Crop Protection – pathologists and entomologists covering greenhouse pests and diseases
  • Horticultural Technology Solutions – robotics, automated sensing, vision systems, and digital decision tools
  • Biochemistry – metabolomics and plant-pest-disease interaction analysis

Why Darby McGrath Sees Strawberries as the Next Big Greenhouse Crop

Among emerging crops, McGrath identified strawberries as the most significant near-term opportunity for Canadian greenhouse producers. Grower interest accelerated after disruptions to traditional U.S. strawberry production regions, and as some operators pivoting away from tomatoes – following the spread of tomato brown rugose virus – looked for alternative uses for their existing structures.

The challenge, McGrath explained, is that commercially available strawberry genetics developed primarily in California or Japan were not bred for Canadian growing conditions. Mismatches in heat units, season length, and regional disease pressures affect yields and complicate the economics for growers. Vineland does not currently run its own strawberry breeding program but partners with companies to evaluate varieties and identify which genetics perform best under Canadian conditions.

The Funding Cycle Problem

McGrath also outlined a systemic barrier facing Canadian seed development: competitive granting structures reward early-stage novelty but cannot sustain the long-term continuity that breeding demands. Apple breeding can take 20 years; tomato variety development often spans close to a decade. He suggested a pre-competitive research consortium model – similar to how cancer research organizations pool early-stage findings toward a shared goal – could help Canada's fragmented horticulture research base move faster and build more durable breeding pipelines.

Darby McGrath on the Advanced Pathology Lab

Following the arrival of tomato brown rugose virus in Canada around 2019, Vineland made the strategic decision to invest in a near-quarantine research facility. The Advanced Pathology Lab operates with six growth rooms geographically isolated on campus, enabling disease challenge work – including tomato brown rugose and hop latent viroid – without risk of cross-contamination to other projects or neighboring greenhouse operations.

The lab is also open to third-party evaluations. Companies seeking to register new disinfectant products for use against brown rugose can run trials in the facility, with Vineland providing results as credible third-party validation for growers selecting their sanitation tools.

“It's more of a scheduling nightmare than anything – in a good way,” McGrath said, adding that expansion options including additional lighting and racking are actively being evaluated to bring trials closer to full harvest scale.

Fusarium, Peppers, and the Impact That Drives the Research

When asked about his proudest achievements in the VP role, McGrath pointed to Vineland's ongoing Fusarium research in greenhouse peppers. He described the team as close to identifying the root cause of the disease – work that, if confirmed, would allow growers to address it systematically rather than managing an unexplained production problem.

“We think we're getting to the root cause of it, to why it's happening. It's always the impact where I get to see us hand a solution off to a grower and say, ‘Here, run with it,'” said Darby McGrath, Vice President of Research and Development at Vineland Research and Innovation Centre.

Growers, companies, and researchers interested in working with Vineland can start at the Work With Us tab at VinelandResearch.com. McGrath noted that even when Vineland cannot take on a project directly, the organization can typically connect inquirers with others in its network who can.

Listen or Watch The Entire Episode Below

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