Before modern medicine, herbs were the only thing available to treat ailments. Eager to make sure this knowledge isn’t lost, the Irish Register of Herbalists tend a collection of over 200 plants at St Anne’s Physic Garden within Dublin’s St Anne’s Park. David meets some of those involved and finds out about several herbs including Rosebay willowherb and Stevia which is used today as a sweetener. Also in the programme, Amy Kelly on her collection of exotic and hybrid berries and a visit to Bangor Castle Walled Garden where wild flowers are stealing the show. Ann Fitzsimmons will also be joining David to take on listeners question including one about crumbly raspberries and has a unique new form of bluebell been found in Portaferry? gardenerscorner@bbc.co.uk