There are a few places you can buy fungal wood online. I would recommend looking at Etsy or Amazon. You can also find some retailers that sell it in physical stores, but they are fewer and far between.
When it comes to buying fungal wood, the most important thing is to make sure that you buy from a reputable source. There are a lot of fakes out there, and you don't want to end up with something that isn't going to work. Do your research and only buy from sources that you trust.
Another thing to keep in mind is that not all fungal woods are created equal. Some types are more effective than others, so you'll want to do some research on which type is right for your needs before making a purchase.
Overall, buying fungal wood is a pretty simple process as long as you know what you're doing. Just make sure to buy from a reputable source and choose the right type for your needs and you should be all set!