S1, E5: Grevillea Propagation: Angus Stewart shows us the science behind propagating, and demonstrates some of the tricks of the trade when propagating semi-hardwood cuttings. Advanced Native Trees: John Patrick talks about some of his favourite advanced native trees that provide an instant feature in the garden and explains how to choose the best specimen. Daphne Care: Jane Edmanson tells us about the deliciously scented daphne, how to care for them and how to remedy any that are ailing. Weed Alert-Water Weeds: Jerry Coleby-Williams alerts gardeners to waterweeds - water hyacinth, water lettuce and salvinia � which are considered a major problem for North Australian waterways. An Evolving Garden: Colin Campbell discovers a hillside country garden south of Brisbane, which has been transformed from a banana plantation into a garden that overflows with an impressive plant collection.