I guess I messed up during the drying process. Such a beautiful cola, too, but I forgot to take a pic before I noticed the mold - at which point I just started peeling away chunks at a time ☹️
What a bummer.
You mean the entire plant or individual branches with the fan leaves removed? Because the latter should be fine as long as there's some air circulation and the relative humidity isn't too high. That's how I've always dried them and I've never had mold. Few times I've moved them drying elsewhere after the surface has still felt moist after like 4 days of drying.