Use Japanese cut paste / Would sealant to protect fresh branch cuts / wounds on your bonsai tree. It helps stop bacteria getting into the wound and aids in a quicker healing time. Simply roll some in your fingers and cover the wound on your tree. Simple. Wetting your finger tips will make applying the putty a bit easier. It will also insure a good seal around the wound. The Green lid is a brown colour putty. The White lid is a Grey colour putty.