On 1 March, Virginia Heywood - Guide, Royal Botanic Gardens Melbourne, was joined by Stephen Ryan - Dicksonia Rare Plants; Merryle Johnson - Seedscape Seeds; and Chris Williams - Lecturer, Urban Horticulture, University of Melbourne.

Text your gardening questions to 0488 809 855, or call 9419 0155 while we're on the air.

Tune in 7:30 - 9:15am Sundays on 855 on the AM dial, 3CR Digital or stream at 3cr.org.au