The publication provides the results of monitoring, mapping and control of invasive plant species Solidago сanadensis L. and Asclepias syriaca L. during 2021-2022. The first assessment stage of the study of the spread of invasive species in the grass habitats of meadows and steppes of the rare habitats of the "Emerald Network" of the Udai River valley was carried out. 51 localities of S. sanadensis and 16 of A. syriaca were found on the investigated territory of grass habitats. Preliminary results show that mowing and removing the ramets of invasive plants leads to a slowdown in plant development and the loss of the flowering phase.