Open letter: Six steps towards a national plan of protected horticulture—A call for coordinated action. - Batke, Sven; Barker, David; Jones, Darrell; Farmer, Jack; O'Leary, Noel; Morley, Phil; Walgate, John; Stiles, Lee; Hibberd, Luke; Perrott, Jason; Russell, Alfie; Weir, Ralph; et al. (Plants, People, Planet, 2026)