UPDATE – 04/02/2019

The Terrestrial Plant Rule has been signed by the Governor and was published March 18, 2019!


The rule goes into effect 30 days after publishing, so it should be effective around April 16, 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 (around April 16, 2019).


A pdf copy of the rule (plant list included) is here. (20181121-IR…).


Now that the rule is adopted we hope the amendment process will begin soon to add Callery pear, Norway maple, and many others.


Dawn Slack

Director of Stewardship, The Nature Conservancy

Chair, Invasive Plant Advisory Committee

Project Coordinator, Indiana Invasives Initiative, SICIM