Will elm sap drippings kill arborvitae bushes?

Elm sap drippings are generally not harmful to arborvitae bushes. While excessive sap can create a sticky residue and potentially attract pests, it typically does not contain toxins that would harm the plants. However, if the sap is promoting the growth of mold or fungi, it could indirectly affect the health of the arborvitae. Regular maintenance and cleaning can help mitigate any potential issues.