Landscaping projects with "Landscaping By" sponsor signs are allowed in Virginia Department of Transportation (VDOT) right-of-way through the VDOT Comprehensive Roadside Management Program (PDF).
For most locations, an investment of $7,500 in landscaping material, labor and maintenance for five years is required to be eligible for the program. The "Landscaping By" sign must meet VDOT requirements (PDF) and cannot be counted against the $7,500 investment.
This program is a public-private partnership between VDOT, Roanoke County and the interested business. A public hearing and a Resolution of Support from the Board of Supervisors is required as part of the package submitted to VDOT for approval.