Prince Alfred Park: Costa visits Prince Alfred Park to explore how a new design has improved the beauty and value of this historic urban hub. Friends and Foes: Jerry talks to an entomologist to find out how to distinguish between good and bad caterpillars and learns some strategies to keep on top of the pests. Crazy for Tomatoes: Josh is planting heaps of tomatoes in pots and in his garden, giving tips for a bumper summer harvest. A New Lease on Life: Jane visits a heritage conservatory in a public park that's home to a vast collection of stunning species orchids. Gardening on the Edge: Sophie visits an artist on the Fleurieu Peninsula in South Australia to have a look around her colourful garden, which is thriving in the tough conditions.