Rule 4.5.210 - PRIORITY 3 REGULATED PLANTS (NOT MONTANA LISTED NOXIOUS WEEDS)(1) These regulated plants have the potential to have significant negative impacts. The plant may not be intentionally spread or sold other than as a contaminant in agricultural products. The state recommends research, education, and prevention to minimize the spread of the regulated plant: (a) Cheatgrass (Bromus tectorum);(b) Hydrilla (Hydrilla verticillata);(c) Russian olive (Elaeagnus angustifolia);(d) Brazilian waterweed (Egeria densa); and(e) Parrot feather watermilfoil (Myriophyllum aquaticum or M. brasiliense).NEW, 2010 MAR p. 217, Eff. 1/29/10; AMD, 2010 MAR p. 1985, Eff. 9/10/10; AMD, 2015 MAR p. 1042, Eff. 7/31/2015.AUTH: 80-7-802, MCA; IMP: 7-22-2101, MCA