AusBonsai

Hey , I have some small liquid amber that have not long developed a white coating on the trunk/roots. Not sure what it is or if its bad. If its bad how to remove it. Advice much appreciated thanks. Hope pictures have turns out OK.

I use copper spray for any fungal issues.
Lots of air movement will hel as well

I can't really tell from the pictures but its easily fixed.

I would cover the soil with plastic then mix a solution of lime sulphur and garden oil diluted with water and give it a scrub with an old tooth brush. Be careful not to let this mix get into the potting mix.

Mate, I'd be inclined to clean it off with soapy water and a tooth brush before using harsher methods if it comes back then consider a stronger treatment. Or take it to a nurseryman for advice that what I'd be doing Remember to cover the soil to protect the roots
Cheers Rod