SOS® 400

Keep Playing on Better Winter Turf with SOS^® 400

Need dependable winter color without the cost of perennial ryegrass? SOS^® 400 delivers the ideal balance of performance, appearance, and value for fall overseeding. Built on Barenbrug's proven Panterra™ turf-type annual ryegrass genetics, SOS^® 400 establishes quickly, creates a dense, attractive playing surface, and transitions cleanly back to warm-season turf in spring, all while reducing mowing compared to traditional annual ryegrass.

Why Choose SOS^® 400?

SOS^® stands for Super OverSeed, a name earned by Barenbrug's breakthrough turf-type annual ryegrass genetics developed in cooperation with Texas A&M University. Built on the proven Panterra™ genetic line, including Panterra V™, SOS^® 400 combines the affordability of traditional annual ryegrass with the improved turf quality, finer texture, darker genetic color, and reliability expected from modern overseeding varieties.

Designed specifically for fall overseeding, SOS^® 400 establishes quickly as warm-season turf enters dormancy, creating a dense, attractive playing surface throughout the cool season. Its excellent traffic tolerance, slower growth rate, and predictable spring transition help reduce maintenance while delivering outstanding winter turf quality.

Ideal Applications

SOS^® 400 is an excellent choice for:

• Golf courses
• Sports fields
• Parks
• Recreational turf
• Lawn renovation and winter color

Proven Benefits

Compared to traditional Gulf annual ryegrass, SOS^® 400 delivers:

• Fast germination and establishment, even in cool soil temperatures
• Fine turf-type texture
• Excellent traffic tolerance
• Darker genetic color
• Slower growth rate with reduced mowing
• Predictable, chemical-free spring transition
• Outstanding value for overseeding programs

Easy Establishment

SOS^® 400 germinates in soil temperatures as low as the mid-40s°F, allowing successful overseeding later into the fall than many alternatives. Rapid establishment helps extend the playing season while maintaining an attractive green surface throughout winter.

For best results:

• Seed in the fall as warm-season turf enters dormancy.
• Seed at 10 to 15 lbs. per 1,000 sq. ft.
• Vertically mow and scalp existing Bermudagrass before seeding to maximize seed-to-soil contact.
• Keep the seedbed consistently moist during germination.

Under favorable conditions, germination typically begins within 3–5 days and establishment is completed in just over one week. As overnight temperatures consistently reach 60–65°F in late spring, SOS^® 400 naturally transitions out, allowing permanent warm-season turf to recover without chemical removal.

Built for Performance. Designed for Value.

Whether you're managing a golf course, sports field, park, or recreational turf, SOS^® 400 delivers dependable winter color, fast establishment, excellent playability, and a predictable spring transition, all at an economical price. Find your nearest Barenbrug distributor and discover why turf managers continue to choose SOS^® 400 for reliable winter overseeding. Find your nearest Barenbrug distributor or buy now online.

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