White strawberries and purple potatoes trends for next year's gardeners They are also versatile and can be roasted, mashed or made into chips. Growers report that they are a versatile spud which is ideal for mashing, baking and roasting, and particularly good as chips and crisps. Both purple potatoes and white strawberries have been supplied before but only in relatively small volumes. Next year is predicted to be the year when they become fashionable among gardeners along with other trends including "turbo" melons and tomatoes, in which standard examples are grafted onto highly vigorous roots, giving larger plants, heavier crops and greater resistance to pests like whitefly. A spokeswoman for Suttons Seeds, which supply the products, said: "We're preparing for these plants to be big hits with growers next year." Telegraph garden shop: Pineberry 'White Dream'