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Manhattan 4 Perennial Ryegrass

Manhattan 4 Perennial Ryegrass


An elite turf-type perennial ryegrasses especially suited for California. Manhattan 4 is a fourth generation variety which is a top performer in recent USDA turf trials. Manhattan is the longest continuously improved genetic line of Turf-Type Perennial Ryegrass.




Excellent seedling vigor

Rapid establishment

Fine texture

Attractive, uniform appearance

Higher density

Improved traffic tolerance

Dwarf leaf orientation

Less mowing, lower mowing costs

Dark blue-green color

Less fertilizer needed

High endophyte level

High resistance to above ground insects

Improved disease resistance

Improved turf quality, less use of chemicals

Better heat and drought tolerance

Improved summer performance

Improved mowability

Reduced leaf shredding during mowing


Manhattan 4 is a natural for overseeding dormant warm season grasses or for permanent turf on:
Golf Courses, Sportsfields, Cemetaries, Parks, Commercial developments, Residential lawns

Seeding Rates

New turf: 10-12 pounds per 1000 square feet (400-500 pounds per acre).
Overseeding: 6-8 pounds per 1000 square feet (250-350 pounds per acre).


Germination: 6-12 days with proper irrigation.
First mowing: Approximately 21 days.
First limited use: Approximately 30 days.

Adaptability & Care

Climatic Conditions: All (except high altitude)
Soils: Sandy to heavy clay. Not good for extremely wet or shaded areas.
pH range: 5.5 to 8.5
Fertilization: 2 to 4 pounds of actual nitrogen per 1000 sq ft per year. Use a balanced fertilizer with a 3:1:2 ratio of NPK with sulphur.
Mowing height: 1/2 to 1-1/4 inches in cool seasons, 1-1/2 to 2 inches in warm seasons.

Quality Assurance

"Manhattan 4" is available from Stover Seed or an authorized dealer. Manhattan 4 is sold as certified seed. Accept no substitutions.

Ingredients & Specifications

Manhattan 4 Perennial Ryegrass

98% Minimum purity
90% Minimum germination
300,000 seeds per pound

Test Data

2000 National Perennial Ryegrass Trials
Medium Maintenance Athletic Field
2000-2003 Data
Quality Ratings 1-9; 9=ideal turf
Grown at Sunnyvale, CA

Manhattan 4
Gator 3
Manhattan 3
Monterey II
Premier II

LSD Value



To determine whether a cultivar's performance is truly different from another, subtract one entry's mean from another entry's mean. If this value is larger than the LSD value, the observed difference in cultivar performance is significant and did not happen by chance.
Complete tables available upon request.

9180 San Fernando Road • P.O. Box 1579 • Sun Valley, CA 91353
(213) 626-9668 • (800) 621-0315 • FAX (213) 626-4920

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