I have a snow gum which produces a mass of white blossom in the summer - hence 'snow'. It is now about 25 years old and about 30 feet high. I bought it because it does not grow too tall. How tall should it grow to? Does it have a finite lifespan? This winter (not especially cold) all the leaves have suddenly turned a rusty-red colour instead of the normal silver/green. They have, by and large, remained on the tree and the bark looks healthy. I assume the tree is dead. I assume that it has a fungal infection - there are no other eucalypts in the vicinity. Is there no hope of a recovery?
Certified GKH Gardening Expert
My research shows that 30 feet is the maximum height for this tree.
From your description it very much does sound like a Phytophthora fungus.
You can check with your County Extension Office to see if they have any other reports of this issue with other trees in your region.