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Ontario Vegetable Farm Sees Consistent Crop Improvements with CWGrow
Recently we caught up with Simon Ffrench who picks up and applies CWGrow by the truckload. The CW in CWGrow stands for Canadian Wollastonite which is the same wollastonite used on farms big and small.
Simon has been incorporating Canadian Wollastonite into his farm’s fertility program for several years, applying the calcium silicate mineral on 18 different vegetable crops. Located in Ontario’s Holland Marsh region, Cookstown Greens specializes in high-quality vegetable production where consistent yields and crop quality are essential for profitability. When we spoke with Simon last week, he shared how wollastonite has become a cost-effective cornerstone of his soil management strategy, delivering measurable improvements in crop performance.
After four years of using Canadian Wollastonite at Cookstown Greens, Simon Ffrench has become a strong advocate for this natural soil amendment. Working with high-pH soils, Cookstown Greens applies 1200 lbs/ac on each field every three years as part of its fertility program with impressive results, “I wouldn’t want to do without it, we have fewer concerns about crops overall.”

Credit: Cookstown Greens
Crop Quality & Performance
“Wollastonite is very cost-effective for our farm,” he notes, emphasizing the economic benefits alongside the agronomic improvements. His potato crops have responded very well, but the most dramatic improvement has been in their beet production.
Learn more about Cookstown Greens: https://www.cookstowngreens.com/site/home
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Carbon Removal Project – Wollastonite is Available at No Cost for Eastern Ontario Farmers
Canadian Wollastonite is partnering with UNDO to deliver a win-win solution for farmers and the planet.
As part of a carbon removal program powered by enhanced rock weathering (ERW), we supply and spread crushed wollastonite for free on eligible farms in Ontario. Farmers simply cover the cost of trucking; everything else is handled for you.