Harvesting Grass Seed The timing of seed harvest is a major decision for most grass seed growers. This is because seed head generally emerge at different times, which causes uneven ripening. According to Alberta Agriculture Agri-fax, "The ideal time to swath (grass for seed) is when seed is at the medium to hard dough stage and still firmly attached." However, moisture testing of the entire seed head (35% to 50%) is also a useful indicator of when to swath. Most grasses will hold their seed for 10 to 15 days, but the time from medium dough to seed shatter can be as short as three or four days. To determine exactly when your crop is ready to harvest, check the field regularly. Back to Grass
Seed Harvest - Specialty Menu
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