Kathy Clugston hosts the gardening Q&A, with Anne Swithinbank, Matt Biggs and Chris Beardshaw answering questions sent in by listeners. This week, the panellists share some insect friendly planting ideas and explain how to keep the squirrels away from newly planted spring bulbs. And as we all strive towards a greener planet, they discuss the best carbon-capturing tree planting practices. Meanwhile, with COP26 well underway, Peter Gibbs investigates sustainable gardening around the UK. He speaks with director of The Tangled Bank project in Fife, Harry Watkins, about how the St Andrews Botanic Garden is putting sustainability above all else. Peter also meets with sustainable gardener Sally Nex to discuss what we can all do to make a positive impact from our gardens. Producer - Jemima Rathbone Assistant Producer - Aniya Das A Somethin' Else production for BBC Radio 4