I was recently visiting Fremantle in Western Australia and noticed a large Morton Bay Fig tree in Kings square in the centre. Apparently the health of this tree had been declining, but they hope that recent treatment will lead to an improvement.
The notice by the tree said this was by “injection of a tree enzyme”. I also found the following quote on the City of Fremantle FB page:
To improve the tree’s absorption of nutrients which will help it grow stronger, the bioscientist has given it a ‘booster’ enzyme injection. This enzyme naturally occurs in trees and is an additional boost that will hopefully help the fig tree recover and flourish again this spring.
Well trees have enzymes like any other living thing, but I find it difficult to imagine what enzyme injected into a tree would get transported through its system and help it heal. Is there anyone in silviculture (or WA) who has any idea what this was?