Whenever any tree, plant, shrubbery, or part thereof, or weeds and grass are growing in violation of Sections 921.01 and 921.02 and are trimmed or removed by the City, after the work is done, the City shall give five days notice by regular mail to the owner of the lot or parcel of land at his last known address to pay the cost. The notice shall be accompanied by a statement of the amount of cost incurred, and in the event the amount is not paid within thirty days after the mailing of the notice, then the amount shall be certified to the County Auditor for collection, the same as other taxes and assessments are collected.