Jo and Sab want everyone to plant more banksia trees.Perth needs two million more banksias to give Carnaby's and Baudin's black cockatoos a decent food supply, according to Curtin University botanist Professor Kingsley Dixon. 

01:28 How long until you can expect fruit off your dwarf Hass avocado tree.

04:30 Hot weather is on its way - should you still prune? 

15:20 If your trees aren't prospering, at what point should you replace them? 

The hilarious Sabrina Hahn is a font of knowledge.

Listen to the program live on Saturdays at 9:00AM on ABC Radio Perth and ask your questions by calling in on 1300 222 720 or text 0437 922 720 

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