Will County, IL Invasive Plant Rules: Prohibited Species (2026)

The county finds that invasive and noxious plant species are a public nuisance that degrade landscaped and natural areas. Invasive or noxious plant species may not be used to meet the landscape requirements of this article. Moreover, the planting or maintenance of invasive and noxious plant species is prohibited. The county may require the owner of the property to remove any invasive and noxious plant species regardless of the property owner's roles in introducing it to the property.

(5)   If more than 30 trees will be used, a mixture of three or more tree species must be used.

(6)   If more than 50 shrubs will be used, a mixture of three or more shrub species must be used.

(E)   Maximum plant height generally.

(1)   Plant height is limited to a maximum of ten inches within all of the following areas:

(a)   Within ten feet of the public right- of-way;

(b)   Within five feet of a lot line; and

(c)   Within five feet of any fixed utility equipment or similar structure or property.

(2)   The ten-inch maximum plant height requirements of this division (E) do not apply to any of the following:

(a)   Woody plants, such as trees and shrubs;

(b)   Plants located directly along opaque fences or walls or provided to satisfy the requirements of this landscaping and screening article;

(c)   Vines attached to woody plants, fences or walls;