Water Use Classification of Landscape Species (WUCOLS IV)
Water Use Classification of Landscape Species (WUCOLS IV)
Water Use Classification of Landscape Species (WUCOLS IV)
University of California
Water Use Classification of Landscape Species (WUCOLS IV)

Water Requirements for Turfgrasses

Warm-season and cool-season turfgrasses were not reviewed by the WUCOLS IV regional committees. Data here is from Harivandi, et. al., 2009 publication, Managing Turgrasses During Drought. The complete publication is cited below.

Water requirements for Warm-season and Cool-season Turfgrasses

Type

Common name

Optimal Irrigation* (% ET0)

Deficit Irrigation** (% ET0)

Warm season

Common bermudagrass

60

40

 

Hybrid bermudagrass

60

40

 

St. Augustinegrass

60

40

 

Seashore paspalum

60

40

 

Zoysiagrass

60

40

 

Buffalograss

60

40

 

Kikuyugrass

60

40

Cool Season

Tall fescue

80

60

 

Perennial ryegrass

80

60

 

Kentucky bluegrass

80

60

 

Fineleaf fescues

80

60

 

Creeping bentgrass

80

60

 

Rough bluegrass

80

60

* Optimum irrigation is the amount of water needed for most efficient growth, maximum quality, and best appearance.

** Deficit irrigation provides sufficient water to maintain adequate appearance with less growth (relative to optimum irrigation).

Note: For turfgrass blends, the species with the highest water requirement will generally determine the irrigation level for the blend. For instance, if a blend contained perennial ryegrass and common bermudagrass, then it would be irrigated at 80% ET0 for optimal performance. If the sward appears to be overwatered, however, then a downward adjustment in irrigation level would be warranted.

 

Harivandi, A. M. 2009. Managing Turfgrass During Drought. Oakland: University of California Agriculture and Natural Resources Publication 8395, http://anrcatalog.ucdavis.edu/pdf/8395.pdf.

Page Last Updated: January 6, 2014
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