No trees or shrubs shall be planted on any right-of-way within the town without the written permission of the Public Works Director. This prohibition does not apply to grass or similar ground cover which can be cut by a mowing machine. Any application to plant trees or shrubs on a right-of-way shall be made in writing to the Public Works Director stating the type and proposed location of each tree or shrub.
(`75 Code, § 19-3)