The Terrestrial Plant Rule has been signed by the Governor and was published March 18, 2019. The rule went into effect 30 days after publishing, so it became effective on April 18, 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.
Purdue University also has a pdf publication for download titled What Nurseries Need to Know About the Invasive Species Regulation.