I have an orchid tree that has been growing beautifully for years. Suddenly (seemingly overnight) the leaves turned yellow, most fell off and it looks awful. We live in central Florida where we have had one of the wettest winters I can remember. Would the moisture be hurting the orchid tree?
Yes, absolutely. Orchid trees really don't like wet soil; possibly the spot where you have it has a bit more clay in the soil. Here's more info on orchid trees: https://www.gardeningknowhow.com/ornamental/trees/orchid-tree/growing-orchid-trees.htm