TWCA Qualified cultivars meet or exceed the standard for drought tolerance at all locations across at least two years of trialing. TWCA Qualified products must contain at least seventy percent (70%) TWCA Qualified material to carry the TWCA seal.

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Fine Fescues

• Chewings fescue
• Creeping Red fescue
• Hard fescue

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​Festuca rubra L.ssp. commutata 

Festuca rubra L. ssp. rubra

​Festuca brevipila

Kentucky Bluegrasses

​Poa pratensis L.

perennial ryegrasses

Lolium perenne

Cultivar name

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Reservoir

tall fescues

 Festuca arundinacea​

Cultivar name

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Relentless

Fine Fescues

• Chewings fescue
• Creeping Red fescue
• Hard fescue

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​Festuca rubra L.ssp. commutata 

Festuca rubra L. ssp. rubra

​Festuca brevipila

Kentucky Bluegrasses

​Poa pratensis L.

perennial ryegrasses

Lolium perenne

tall fescues

 Festuca arundinacea​

Fine Fescues

• Chewings fescue
• Creeping Red fescue
• Hard fescue

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​Festuca rubra L.ssp. commutata 

Festuca rubra L. ssp. rubra

​Festuca brevipila

Kentucky Bluegrasses

​Poa pratensis L.

perennial ryegrasses

Lolium perenne

tall fescues

 Festuca arundinacea​

Fine Fescues

• Chewings fescue
• Creeping Red fescue
• Hard fescue

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​Festuca rubra L.ssp. commutata 

Cultivar name

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Enchantment

Shadow III

Festuca rubra L. ssp. rubra

Cultivar name

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Seabreeze GT

Xeric

​Festuca brevipila

Cultivar name

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4HES Hard

Bighorn GT

Kentucky Bluegrasses

​Poa pratensis L.

Cultivar name

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Desert Moon

Full Moon

Sonora

 Tirem

perennial ryegrasses

Lolium perenne

Cultivar name

---

Gray Hawk

Pacifico

Sun Hawk

tall fescues

 Festuca arundinacea​

Cultivar name

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GLX Aced

GLX Star

Lifeguard

Raindance

Relentless

Saltillo

​Sun Fire

Fine Fescues

• Chewings fescue
• Creeping Red fescue
• Hard fescue

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​Festuca rubra L.ssp. commutata 

Festuca rubra L. ssp. rubra

​Festuca brevipila

Kentucky Bluegrasses

​Poa pratensis L.

perennial ryegrasses

Lolium perenne

tall fescues

 Festuca arundinacea​

Cultivar name

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Thunderstruck

Fine Fescues

• Chewings fescue
• Creeping Red fescue
• Hard fescue

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​Festuca rubra L.ssp. commutata 

Cultivar name

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Heathland

Festuca rubra L. ssp. rubra

Cultivar name

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Celestial

​Festuca brevipila

Cultivar name

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Nanook

Vertical Divider

Kentucky Bluegrasses

​Poa pratensis L.

Cultivar name

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Artesia

Bedazzled

Full Moon

WaterWorks

perennial ryegrasses

Lolium perenne

Cultivar name

---

Manhattan 5

Manhattan 7

Rainwater PR

tall fescues

 Festuca arundinacea​

Cultivar name

---

2nd Millennium ​

Aquavita

Bonsai 2x

Relentless

Fine Fescues

• Chewings fescue
• Creeping Red fescue
• Hard fescue

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​Festuca rubra L.ssp. commutata 

Festuca rubra L. ssp. rubra

​Festuca brevipila

Cultivar name

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Viking H2O

Kentucky Bluegrasses

​Poa pratensis L.

Cultivar name

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Diva

perennial ryegrasses

Lolium perenne

Cultivar name

---

Deschutes

Molalla

tall fescues

 Festuca arundinacea​

Cultivar name

---

Amity

Renegade DT

Zigzag

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