I've got an Eucalyptus outside the Australia exhibit area that has begun browning and dropping leaves. It was partially defoliated by a freeze into the lower twenties last winter but it recovered and did beautifully through the summer. It's been a wet summer and we are now in a dry spell. It hasn't rained worth a lick in a month now. Is this a response to the dry spell? Or is there a more sinister force at work on this poor tree?
There's another Eucalyptus species, I think tereticornis, not more than 25 feet from this tree that still looks beautiful and is full of blooms.