Sab and Amber wrap up National Science Week with an update on diabolical dieback in Western Australia, suckering tree species and soil drainage speeds. 

06:28  How to do away with suckering Robinia trees

31:32 What's happening with dieback in WA? - with Mia Townsend from the Dieback Working Group

38:41 How to tell the difference between slow and fast draining soil. 

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