Don't you find this interesting?
From the Sydney Morning Herald online: The principal soil scientist at the Sydney Environment and Soil Laboratory, Simon Leake, has warned that a mineral deficiency caused by constant raking in the name of cleanliness may be one of the major factors crippling trees across Sydney. He has found the dirt in many iconic parks has extraordinarily low levels of potassium. |
Here is a link that might be useful: dying figs in Centennial Park