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I cleaned it with isopropyl alcohol just now, in case it's a fungal infection. Last watering was on the ~18th of last month, before it overwinters with little to no water. It's soil is a mix of extreme grit with a mixed shell of more normal soil around the outside. Terracotta pot. It gets exactly seven hours of bright, direct artificial light under a 200w grow light each day.
The only bugs around are a few fungus gnats that rode in on produce a few months ago. Any advice would be helpful! I'm trying not to carve into it unless absolutely necessary, as it's only about as tall as a pencil.
I don't think you're supposed to use any kind of alcohol on woody trunks of plants, but maybe I'm wrong there.
It just looks like a deadened growth that will turn into a knot. Unless you see it spreading, I don't think there is any cause for concern, especially if it's an indoor plant.
Fungus or mold usually has color, and dead growth is brown or black like this.
It’s used as an insecticide, and technically there’s alcohol in there already? Methanol!
Can use it as a spray on tomatoes and cannabis atleast for stuff like spider mites.