Section 16-302-410 - Standards for sod quality seed(1) Except for ryegrass sod quality seed, seed standards for sod quality grass seed are as follows: | Variety | Minimum % Pure | Minimum % Germination | Maxi-mum% Other Crops (a) | Maxi-mum% Weeds (b) |
| Kentucky Bluegrass | 97 | 80 | 0.10 | 0.02 |
| Red Fescue | 98 | 90 | 0.10 | 0.02 |
| Chewings Fescue | 98 | 90 | 0.10 | 0.02 |
| Tall Fescue | 98 | 85 | 0.10 | 0.02 |
(a) Must be free of ryegrass, orchardgrass, timothy, Agrostis sp., black medic, Poa trivialis, brome, reed canarygrass, tall fescue, clover, and meadow foxtail. Maximum allowable Canada blue-grass 0.02%. When the base sample is one of these kinds, the species will not be considered a contaminant (i.e., tall fescue in tall fescue).(b) Must be free of Big, Canby and Sandberg bluegrass, dock, chick-weed, crabgrass, plantain, short-awn foxtail, annual bluegrass, velvetgrass, Vulpia sp., and noxious weed seeds as listed under WAC 16-302-100 and 16-302-105.(2) Seed standards for sod quality ryegrass seed are as follows: | Variety | Minimum%Pure | Germination % (d) | Other Crops % (a) | Maximum % Weeds (c) |
| Ryegrass (b) | 98 | 90 | 0.10 | 0.02 |
(a) Must be free of black medic, orchardgrass, timothy, Agrostis sp., Poa trivialis, brome, reed canarygrass, tall fescue, clover and meadow foxtail. Maximum allowable Canada bluegrass 0.02%.(b) Maximum fluorescence levels as determined by breeder or variety owner.(c) Must be free of Big, Canby and Sandberg bluegrass, dock, chickweed, crabgrass, plantain, annual bluegrass, velvetgrass, Vulpia sp., short-awn foxtail, and noxious weed seeds as listed under WAC 16-302-100 and 16-302-105. An additional 0.07% of weedy Bromus spp. will be allowed.(d) 85% minimum germination allowed on ryegrass varieties as designated by the breeder or variety owner. See list maintained by the seed program.(3) A sod seed analysis certificate is the basis of determining if a lot meets sod quality standards. This certificate is issued by the certifying agency and represents a purity analysis, a twenty-five gram noxious all weed all crop exam and a germination test, except a 50-gram noxious all weed all crop exam is required for fescues and ryegrass.(4) In addition to a seed certification tag, seed meeting sod quality certified seed standards will be tagged with a special "sod quality seed" tag.Wash. Admin. Code § 16-302-410
Amended by WSR 14-20-050, Filed 9/25/2014, effective 10/26/2014Statutory Authority: RCW 15.49.310 and chapter 34.05 RCW. 06-15-137, § 16-302-410, filed 7/19/06, effective 8/19/06. Statutory Authority: Chapters 15.49 and 34.05 RCW. 03-18-072, § 16-302-410, filed 8/29/03, effective 9/29/03; 02-12-060, § 16-302-410, filed 5/30/02, effective 6/30/02. Statutory Authority: RCW 15.49.005, 15.49.081, 15.49.310, 15.49.370(3) and chapter 17.24 RCW. 00-24-077, § 16-302-410, filed 12/4/00, effective 1/4/01.