Horticulturalists express alarm after award-winning Matt Keightley launches app that can automate designs Horticulturalists express alarm after award-winning Matt Keightley launches app that can automate designs With glasses of champagne sipped among the peonies, Chelsea flower show is generally a friendly and genteel occasion. But this year, the secateurs have been drawn as gardeners clash over the use of AI in designing the exhibits. Matt Keightley, an award-winning designer who has created