Meyer Lemon Tree and Satsuma tree has a leaf fungus

Neem oil

Horticulture oil

I have a Satsuma tree and a Meyer Lemon tree too. I know nothing about outdoor gardening. I went to a Home Depot in Baton Rouge and they had the fruit trees real cheap. The trees were real cheap and they were very small. I planted both of them in my back yard and I didn't expect them to live. Well, they didn't die and about five years ago I saw the white flowers and I knew that the flowers meant that I would get fruit. The fruit the trees bore were excellent. The lemons were huge and the satsumas were real sweet. The fruit during the last two years were awful. I never took into account that the two fruit trees could pollinate each other. Both trees bear the same kind of fruit and the fruit is awful. The fruit is real sour so I just leave that fruit on the tree because it will eventually fall off. The fruit looks nothing like a satsuma or lemon. I'll just leave the trees alone because they provide shade and birds love to nest in them. I know nothing about gardening outdoors and I'll just stick with my growing orchids. I have been growing orchids for over thirty years and even won a few ribbons. Contrary to public opinion, orchids are very easy to grow.

Depends on what you mean by fungus. If you truly have fungus, get yourself some of that copper spray and that will take care of it…gotta reapply every time it rains, though.

On the other hand, if you are talking about that dark, powdery stuff that gets on the leaves and fruit, that’s not fungus….its aphid piss. Kill the aphids and the piss will disappear