As new plantings emerge from the dust and hubbub of the redevelopments at Wisley, we explore the Wisteria Walk and Heather Landscape. Plus a round-up of RHS partner gardens to visit this summer, results of a two-year science research project into how gardeners can best deal with carrot fly and wildlife writer Kate Bradbury rallies gardeners in defence of some surprising allies - wasps! For more info and useful links see www.rhs.org.uk/podcast
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