Qualified
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Fast germination and aggressive growth make Perennial Ryegrass popular on playing fields and in high traffic turf applications like public parks. Found through most of the cool season turf range, Perennial Ryegrass is also used to overseed warm season turf. |
Perennial Ryegrasses
lolium perenne
Single species evaluation makes for meaningful comparisons. Comparing water use within a species allows turf managers, homeowners, and governments to use the most drought tolerant turfgrass available for a specific application. While some species thrive in a trafficked area with full sun (Perennial ryegrass and Kentucky bluegrass are excellent examples) others (fine fescues) would almost certainly die quickly in such environments.
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Cultivar name
Reservoir
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Cultivar name
Gray Hawk
Pacifico
Sun Hawk
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Cultivar name
Manhattan 5
Manhattan 7
Rainwater PR |
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Cultivar name
Deschutes
Molalla |
TWCA Qualification
TWCA uses peer review of objective data collected through multi-year, multi-site trialing to qualify the most drought tolerant cultivars of each turfgrass species.
Qualification in TWCA is time limited and progressive; meaning each cultivar must either re-qualify against a new, higher standard of drought tolerance or lose its use of the seal. Qualified products must contain a minimum of 70% TWCA Qualified cultivars. |
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