Hold on to your empty Tetra Paks this month and help the environment as part of Plantober, a new campaign to introduce thousands of tree saplings by the International Tree Foundation and rewilding charity Creating Nature’s Corridors. Those juice, soup and milk cartons work a treat as thrifty planters. Visit creatingnaturescorridors.co.uk/plantoberfor a guide, sign up for news on donating your saplings to a planting project – and share your progress on social media with the hashtag #plantober.