Barenbrug SOS® 1458-25 Seed 25 lb - SOS Turf-Annual Ryegrasses from Barenbrug offer unique solutions to fall overseeding challenges. With three generations of turf-annuals available, there is surely a product that can be tailored to your project’s budget, on-site requirements and turf quality needs. SOS mixtures germinate and establish extremely fast, and they provide an ideal alternative to more expensive and persistent perennial ryegrass over-seeding mixtures.