(1) Growth facility must only contain certified hemp production. Multiple FHS varieties may be present but no other hemp plants are allowed except for pollen parent plants that are the pollen source.

(2) Growth facility must be free of all plants for a minimum of six weeks prior to receiving plants at the beginning of the crop year or production season unless the previous crop was the same variety. If sanitation is used to reduce the hemp free period, a sanitation plan must be submitted to the certifying agency. Pollen sanitation is not required if the entire greenhouse facility produces only one pollen source and other female lines are continually rogued to prevent contaminating pollen sources.

(3) Certified feminized hemp seed crops must not be grown on land which:

(a) In either of the preceding two years produced a noncertified crop of hemp or a different variety of hemp.

(b) In the preceding year produced a certified crop of a different variety.

(4) Weeds:

(a) The presence of broomrape (Orobanche spp.) in hemp crops is cause for rejection.

(b) Excessive weeds obscuring field inspection shall be grounds for rejection.