Isolation requirements for industrial hemp seed production are as follows:
(1) Isolation areas must be kept free of any harmful plants that can cause contamination. Not more than one plant per eleven square feet of harmful contaminants (species that can cross pollinate with the inspected crop) is permitted within the required isolation distance(s) adjacent to the inspected crop. The conditions of each crop are assessed by the department, which may alter this standard, usually by reducing the number of contaminant plants permitted per square yard, according to identified contamination risks.
(2) Foundation, registered and certified industrial hemp must be isolated from any marijuana production licensed by the liquor and cannabis board by a distance of fifteen miles.
(3) Industrial hemp seed production crops for certification must be isolated from all other industrial hemp varieties or fields not meeting the varietal purity requirements for certification as follows:
Inspected Crop | Isolation Factor | Isolation Distance in Feet |
Dioecious type: Foundation and Registered | Different varieties of industrial hemp | 16,150 |
Noncertified industrial hemp | 16,150 |
Lower certified class of same variety | 6,460 |
Same class of same variety | 3 |
Dioecious type: Certified | Different varieties of industrial hemp | 16,150 |
Noncertified industrial hemp | 16,150 |
Certified class of the same variety | 3 |
Monoecious type and hybrids: Foundation and Registered | Dioecious variety of industrial hemp | 16,150 |
Noncertified industrial hemp | 16,150 |
Different varieties of monoecious or female hybrid | 6,460 |
Certified class of same variety | 3 |
Monoecious type and hybrids: Certified | Dioecious variety of industrial hemp | 3,230 |
Noncertified industrial hemp | 3,230 |
Different varieties of monoecious or female hybrid | 646 |
Certified class of same variety | 3 |