In this edition of the Gardening Hour, Dave Gillam from Abercorn Plant and Garden Centre, joins Ken Crowther to answer your gardening questions on everything from dahlias, orchids and bougainvillea.
The moth orchid or phalanopsis, and the boat orchid or cymbidium are two of the most popular varieties as they are cheap to buy, often less than a bunch of flowers and will continue to flower for several months. Orchids are one of the two most numerous plant families as Hester Macdonald reports.