I need to get some different sealants, and find out what works best. Some of them stain the tree, and I need to learn which ones do this permanently and which ones are only temporary. As my collection grows, I have more trees I can practice test trials on, to see which options will work best on my main trees.

Recently, I did concoct my own wound treatment formula. Tea tree oil, peppermint oil, cinnamon, and castor oil. Seems to be working to keep fungus and insects away, but not very strong to hold in moisture. Uses it on forsythia and willow, both which heals quickly anyway.

Any good tools for carving out the interior hard wood that stick out from a cut? Maybe knob cutters or a rotary dremmel to grind it out? Some of these tools, along with proper bonsai wire and wound sealant I have not had the funds to invest in... yet.