Our Greek lemon tree- growing in a bed, , some3 metres tall, is showing amber waxy exudes on the trunk &larger branches, also a self sown honeysuckle is now twining up the stem . Is there any cause for concern & what should I do? .it produces lemons twice a year
Remove the honeysuckle or it will overgrow the tree. But that likely has no relation to the gummosis, which could be a fungus-like disease infection.
If it is the Phytophthora gummosis, it is hard to control an advanced infection. Here is an article with some overview and control options.