Commenting on the arrangement he said: "As an ethnobotanist, you could say that I'm a geek that loves growing, so Fiskars' use of science, technology and passion in designing tools that transform gardening is the perfect partnership.
"I've been using Fiskars tools for years and frankly, the pruners are so sharp that I feel like Mr Myagi from the Karate Kid every time I use them. It's amazing to work alongside Fiskars in revolutionising UK gardening."
UK marketing director Kerry Murfin said: "We are really excited to be working with James to promote the Fiskars range of award winning tools. From educating a nation on the fascinating science of plants, to growing cucamelons and wasabi, James injects va va voom into gardening.
"Since first appearing on our screens he has fired up a new generation of growers and garden lovers, and turns traditional gardeners into the garden passionista. With his combination of science, gardening expertise and unquestionable aesthetic appeal, Fiskars is the perfect tool of choice for this forward thinking expert."
Wong will be appearing at Fiskars events including the Garden Press Event on the 12 February, customer events and at Glee in September.