In this week's Gardeners' Corner a visit to Rowallane's walled garden reveals majestic artichokes and other plants which love sheltered conditions. Ann Fitzsimmons talks about her summer veg plan, growing melons in her greenhouse and how to harvest seed from early summer flowering plants. Also in the programme, Neil Porteous on the effects of the hot weather on this year's plants, an update from the newly planted rose garden at Mountstewart and Maurice Parkinson joins David in the studio to answer listeners' questions.