Orchid getting black spots

I was wondering why is my orchid, Oncidium Jairak Fragrance, is developing black spots and markings on the pseudobulbs? The substrate is sphagnum moss with perlite mixed in. I allow the substrate to dry out a bit before watering and…

Fungus on Carpinus?

I have small black spot and on twigs of my hornbeams that’s spreading and causing branch die back. I’m seeing similar tip die back on a nearby River Birch and Limber Pine but no spotting. Is this fungal? What is…

Black Spots on Maple tree

We have several very large Maples in our backyard. This year the leaves have black spots and eventually the black covers the entire leaf which falls off. The tree still produced keys. We have 3 maples in our back yard…