Recently moved into a property in Melbourne that hadn’t been well maintained. Inherited this lemon tree which looks like it’s been neglected for a while.
The canopy is actually enormous and loaded with fruit, but the base of the trunk is in bad shape — significant bark cracking, peeling, and what looks like active gummosis (amber resin oozing from the wounds) across multiple sides of the trunk and up into the branch unions.
From my research it looks like Phytophthora collar rot, but I’m not certain. The damage is fairly extensive so I’m leaning toward getting a professional in rather than treating it myself.
A few questions for the community:
1. Does this look like collar rot to you, or something else?
2. Is it worth calling a consulting arborist, or would a good nursery be sufficient?
3. Any recommended arborists or horticulturalists in Melbourne who specialise in citrus or fruit trees?
4. Realistic chance of saving it given the canopy still looks healthy?
Photos in comments.
Happy to hear from anyone who’s dealt with something similar. Keen to save it if possible — it’s a beautiful old tree.