317.25 Invasive plants prohibited — exception — penalty.

The law states that it is prohibited to willfully or knowledgeably move these plants in any form. It is separate from the Noxious Weed List because it is not required by county or state to prevent their spread once the plants are established.

Since many of these invasive plants exist throughout the state, it may be uneconomical and unrealistic to eradicate these plants.

The intent of the law is to prevent intentional spread of known invasive plants.  Some of these plants have been considered to be ornamental and historically been used in landscapes. This code section prohibits the willful distribution, whether it is through retail or for free, and establishes them as illegal under the law.

The law acknowledges these plants are extremely troublesome and need to be controlled when-ever possible.

Full Iowa Code Link

Link to Fact Sheets for Prohibited Plants 

317.25 Invasive plants prohibited — exception — penalty.
1. a. A person shall not import, sell, offer for sale, or distribute in this state in any form,
including the seeds, any of the following plants:
(1) Teasel (Dipsacus) biennial.
(2) Multiflora rose (Rosa multiflora).
(3) Purple loosestrife (Lythrum salicaria).
(4) Purple loosestrife (Lythrum virgatum).
(5) Garlic mustard (Alliaria petiolata).
(6) Oriental bittersweet (Celastrus orbiculatus).
(7) Japanese knotweed (Fallopia japonica).
(8) Japanese hop (Humulus japonicus).
b. However, paragraph “a” does not prohibit the sale, offer for sale, or distribution of the
multiflora rose (Rosa multiflora) used for understock for either cultivated roses or ornamental
shrubs in gardens.
2. Any person violating subsection 1 is subject to a fine not to exceed one hundred dollars.