Q.Lemon tree help
Help! My lemon tree is 5 years old and has a good bit of fruit on it, I usually get about 30-35 lemons a season. It is in a container and comes inside in winter till outside temps are above 50 at night. We recently experienced about 2.5 weeks of rain and not much sun; since then I pruned a good many branches that had some brownish coloring and opened up the canopy a bit for sunlight. That was about 10 days ago and since we have had many hot sunny days, 85+. The water meter shows in the middle after a good soak and fertile with dynagrow 2 days ago. I have found a few pieces of scale but have removed them and misted tree with neem oil. I have diatomaceous earth around bottom since I did see a few ants. But, I haven’t had these spots before on fruit and my leaves still look bad – what is it? and how can I fix it quickly?
Without seeing the issue I can't say for sure.
This article may help you.
https://www.gardeningknowhow.com/edible/fruits/lemons/common-lemon-tree-diseases.htm