Kan. Admin. Regs. § 4-2-9b – Prohibited weed seeds.

(a) The seeds of the following plant species shall not be present in agricultural seed.
1. (1) Texas blueweed (Helianthus ciliaris DC);
2. (2) Columbus grass (Sorghum^xalmum Parodi); and
3. (3) any seeds that cannot be distinguished from Johnsongrass (Sorghum halepense (L.) Pers.) seed.

(Authorized by K.S.A. 2-1427; implementing K.S.A. 2-1421; effective Dec. 8, 2023.)