TWCA Certification

In order for a turf grass consumer product, blend or mixture to be qualified to use the TWCA label, a minimum of 60% of the varieties included in that product blend or mixture must be TWCA qualified. For any variety to qualify, it must pass multiple screenings of scientifically repeatable drought stresses, and score at or near the top of any statistical analysis base.

Once qualified varieties retain their qualification for a maximum of eight years (sixteen years for Kentucky Bluegrasses).  After the qualification has expired, varieties must requalify against a higher standard of drought tolerance making the TWCA qualification process a series of incremental reductions in overall water need for turfgrasses.

Download TWCA Certificate (PDF)

Brands

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pennington

Bermudagrass

Producer Name Species Organization
pennington Princess-77 Bermudagrass Pennington

Chewings Fescue

Producer Name Species Organization
pennington 7 Seas Chewings Fescue Pennington
proseeds_final Culumbra II Chewings Fescue ProSeeds
tmilogo2 Heathland Chewings Fescue TMi
Pure Seed Rose Ag Company Shadow III Chewings Fescue Pure Seed
pennington Survivor Chewings Fescue Pennington

Creeping Red Fescue

Producer Name Species Organization
Pure Seed Rose Ag Company 4CRD-8 Creeping Red Fescue Pure Seed
tmilogo2 Celestial Creeping Red Fescue TMi
proseeds_final Miser Creeping Red Fescue ProSeeds
pennington Pennington ASC 295 Creeping Red Fescue Pennington
pennington Razor Creeping Red Fescue Pennington

Hard Fescue

Producer Name Species Organization
Pure Seed Rose Ag Company 4HES Hard Hard Fescue Pure Seed
proseeds_final AHF 188 Hard Fescue ProSeeds
Pure Seed Rose Ag Company Bighorn GT Hard Fescue Pure Seed
tmilogo2 Nanook Hard Fescue TMi
pennington Predator Hard Fescue Pennington

Kentucky Bluegrass

Producer Name Species Organization
Pure Seed Rose Ag Company 07S-95 Kentucky Bluegrass PureSeed
proseeds_final Aollo H20 Kentucky Bluegrass ProSeeds
tmilogo2 Bedazzled Kentucky Bluegrass TMi
proseeds_final Diva Kentucky Bluegrass ProSeeds
Pure Seed Rose Ag Company Full Moon Kentucky Bluegrass Pure Seed
pennington Mallard Kentucky Bluegrass Pennington
pennington Monte Carlo Kentucky Bluegrass Pennington
proseeds_final Mystere H20 Kentucky Bluegrass ProSeeds
pennington Oasis Kentucky Bluegrass Pennington
pennington Ridgeline Kentucky Bluegrass Pennington
tmilogo2 WaterWorks Kentucky Bluegrass TMi

Perennial Ryegrass

Producer Name Species Organization
proseeds_final APR 2280 Perennial Ryegrass ProSeeds
proseeds_final Double Time GLS Perennial Ryegrass ProSeeds
tmilogo2 Manhattan 5 GLR Perennial Ryegrass TMi
proseeds_final Palmer H20 Perennial Ryegrass ProSeeds
proseeds_final Panther H20 Perennial Ryegrass ProSeeds
proseeds_final Pennant H20 Perennial Ryegrass ProSeeds
pennington Pennington APR2237 Perennial Ryegrass Pennington
pennington Pennington APR 2105 Perennial Ryegrass Pennington
pennington Pennington APR 2154 Perennial Ryegrass Pennington
pennington Pennington APR 2190 Perennial Ryegrass Pennington
proseeds_final Radiance H20 Perennial Ryegrass ProSeeds
tmilogo2 Rainmaker Perennial Ryegrass TMi
tmilogo2 Rainwater Perennial Ryegrass TMi
Pure Seed Rose Ag Company Saltillo Perennial Ryegrass Pure Seed

Tall Fescue

Producer Name Species Organization
tmilogo2 2nd Millennium Tall Fescue TMi
tmilogo2 Aquaduct Tall Fescue TMi
tmilogo2 Aquavita Tall Fescue TMi
proseeds_final Carefree H20 Tall Fescue ProSeeds
proseeds_final Falcon H20 Tall Fescue ProSeeds
proseeds_final Falcon IV Tall Fescue ProSeeds
Pure Seed Rose Ag Company FineLawn H20 Tall Fescue Pure Seed
pennington Greystone Tall Fescue Pennington
pennington Penington ATF 1258 Tall Fescue Pennington
pennington Penn RK4 Tall Fescue Pennington
pennington Pennington ATF 1254 Tall Fescue Pennington
pennington Pennington ATF 1376 Tall Fescue Pennington
Pure Seed Rose Ag Company Rain Dance Tall Fescue Pure Seed
pennington Rebel XLR Tall Fescue Pennington
pennington Rebel Xtreme Tall Fescue Pennington
Pure Seed Rose Ag Company Renegade H20 Tall Fescue Pure Seed
tmilogo2 Rhambler SRP Tall Fescue TMi
pennington Virtue II Tall Fescue Pennington