The Terrestrial Plant Rule has been signed by the Governor and was published March 18th, 2019. The rule went into effect 30 days after publishing, so it became effective on April 18th, 2019. The rule states with respect to the 44 plant species included on the rule:
“a person must not:
(1) Sell, offer or grow for sale, gift, barter, exchange, or distribute a species;
(2) Transport or transfer a species; or
(3) Introduce a species.
(4) Subdivisions (1) and (2) of this subsection are effective one year after the effective date of this rule.”
Note that section (3) “Introduce a species” is effective immediately (on April 18, 2019).
A pdf copy of the rule (plant list included) can be found here.
The Invasive Plant Advisory Committee offers the this helpful Terrestrial Plant Rule Fact Sheet publication to answer some key questions about this rule. Purdue University also has a pdf publication titled What Nurseries Need to Know About the Invasive Species Regulation.
More Information about the TPR and other state level invasive plant rules can be found on the IDNR website & the Purdue Extension publication: What Nurseries Need to Know About the Invasive Species Regulation
More information on reporting invasive plants can be found here.