Please visit our Kansas Recommended page to find a list of plants that are native to Kansas and commerically available for landscaping. You can use the NARROW YOUR SEARCH feature to search for shrubs of the size you want. Choose "Shrub" from GENERAL APPEARANCE and the height you want under HEIGHT (IN FEET). You can choose other criteria as well, if you wish. I chose shrubs 1-3' and 3-6' and have the following recommendations:
I also did a search in our Native Plant Database using the COMBINATION SEARCH option and chose "Kansas" from Select State or Province and "Shrub" from General Appearance and the same height and found another one for you. You should try these to searches yourself to see if you find anything else you like.