Harmful Invasive Weed Control Act

Harmful Invasive Weed Control Act - Directs the Secretary of the Interior to establish a program to provide financial assistance through States to eligible weed management entities to control or eradicate harmful, invasive weeds on public and private land. Requires the allocation of certain funds to States and Indian tribes to carry out projects approved by States and Indian tribes for such purposes. Reserves five percent of such funds for allocation to Indian tribes.

Prohibits such assistance from being used to carry out projects to control or eradicate animal pests.

Allows an Indian tribe, if the funds allocated to tribes are not sufficient to provide such assistance to each weed management entity of a tribe, to seek additional funding by participating as a local stakeholder in the establishment of such an entity.

Permits any activity involving real property to be carried out only with the consent of the landowner.