A some of you know, I have an araucaria araucana, a pair of araucaria budwilli, and several agathis robusta that do winters indoors and warm weather outdoors. I have found this site to be quite useful and have enjoyed viewing others views and information. This may be a question for an experienced arborist or the like: There are a handful of unfortunate stories of seemingly healthy, well-established araucaria araucana suddenly turning brown and dying well before their time. I am curious as to whether someone has identified a specific bacterial or fungal disease that we should be aware of? Is it that the tap root found its way into some form of soil contaminant? Other identified causes of sudden browning of foliage and/or death? I did find some information on a fungus called Pestalotiopsis funerea which is associated with browning of new growth. Sometimes it is triggered by drought and/or cold stress. It may be treated with a copper-based antifungal. However, I am not sure this fungus would rapidly kill a previously healthy, well-established tree...maybe so. I was able to find some anectdotal evidence from Australia that oozing sap might be a sign of drought in some species, such as Agathis. Other than that, most Araucariaceae appear to be disease and pest free. Please share any information.