Land requirements for the production of a hemp seed crop are as follows:

1. (1) Hemp crops for foundation and registered classes must not be grown on land which in any of the preceding three years produced a crop of hemp.

2. (2) Hemp crops for certified classes must not be grown on land which:

   1. (a) In the preceding year produced a certified crop of the same variety.
   2. (b) In either of the preceding two years produced a noncertified crop of hemp or a different variety of hemp.
3. (3) Weeds: The presence of broomrape (Orobanche spp.) in hemp crops is cause for declining certified status.

[Statutory Authority: RCW 15.49.005, [15.49].021, [15.49].310, [15.49].370, and 15.140.030. WSR 21-20-101, § 16-302-850, filed 10/4/21, effective 11/4/21. Statutory Authority: RCW 15.120.030(3), 15.49.021, 15.49.310, and chapter 34.05 RCW. WSR 17-08-090, § 16-302-850, filed 4/5/17, effective 5/6/17.]