Peter Gibbs chairs the popular horticultural forum.
Matthew Biggs, Bunny Guinness and John Cushnie answer questions posed by the gardeners of New Waltham, near Grimsby.
John meets some of the characters behind Grimsby in Bloom, including the man responsible for galvanising the community into gardening action.
Jeffrey Bates from the RHS offers some tips on how your town or village could enter next year's Britain in Bloom campaign.
Pippa Greenwood meets some green-fingered kids in Hampshire who are taking part in the Tree Council's Seed Gathering Season.
And Matthew explains how simple it is to sow green manure and so avoid exposing the bare earth to winter weather.
Including Gardening weather forecast.