The Pima County Cooperative Extension will offer several free water conservation classes this fall. The classes deal with drip irrigation, irrigation timers, xeriscaping and harvesting rainwater. They are:

• Hands-on Drip Irrigation: A workshop designed to teach the principles of design and installation; 9 a.m. to noon, Sept. 27, Oct. 25 and Nov. 22; at the Extension office, 4210 N. Campbell Ave.

• Irrigation Timers: Focuses on the principles of automating a landscape irrigation system through the use of timers or controllers; 1 to 3 p.m., Sept. 27, Oct. 25 and Nov. 22; at the Extension office, 4210 N. Campbell Ave.

• Principles of Xeriscape: This workshop teaches the seven horticultural principles of Xeriscape to promote residential landscapes appropriate for the desert environment and climate; noon to 2 p.m., Oct. 8; at the Extension office, 4210 N. Campbell Ave.

For more information about the classes listed above, call the Cooperative Extension at 626-5161.

A class about creating desert rain gardens will be offered Oct. 8 at The Nature Conservancy, 1510 E. Fort Lowell Road. The workshop will introduce participants to the concept of creating a water-thrifty landscape that relies on seasonal rainfall and rainwater harvesting techniques, rather than supplemental irrigation and potable water. The class will take place from 9 to 11 a.m. For more information, or to register, call the SmartScape office at 626-5161.

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