Irrigation systems have long been used in arid regions of the world.
One system that seems worthy of experimentation for native-plant gardens in the
Chihuahuan Desert is buried clay-pot irrigation. A small area for planting is prepared
in a normal way. However, in the center of the area, an unglazed clay pot is buried so
that its rim is even with the surface of the soil. An ordinary unglazed red pot
obtainable from any garden supply store will serve if the hole in the bottom is
securely plugged. The pot is kept filled to the brim with water and covered with a tile
or other material to reduce evaporation. Water seeps through the sides and bottom of
the pot, keeping the soil moist for a short distance, watering the desired plants while
keeping weed growth farther away to a minimum. Possible drawbacks include salt buildup,
decreased porosity of the pot through time, and the necessity of experimenting to
determine the best distance from the pot for various species of plants. Want to have a
little fun? Experiment!
Contributor: Arthur H. Harris, Laboratory for Environmental Biology, Centennial Museum, University of Texas at El Paso.
Desert Diary is a joint production of the Centennial Museum and KTEP National Public Radio at the University of Texas at El Paso.