Lime Sulphur is usually used in the Horticulture industry to control scale insects, moss, lichen and fungal diseases on plants. It can be used for all of these issues when it comes to Bonsai. A use that is not listed on the container is to whiten deadwood / Jin.
As always, safety comes first when you use any chemical. In this case, it is not just the smell (rotten eggs comes to mind), but also the fact that this chemical is corrosive. It is a good idea to wear gloves and to protect your eyes. Wash your hands very well afterwards and keep your hands away from your face.
Follow the instructions on the container for all uses. As said, the whitening of deadwood is not listed as a normal use of lime sulphur. One thing to keep in mind is to also protect the soil surface from lime sulphur…
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