Xeriscape translates to dry landscape. That is somewhat deceiving as it is not about dry landscaping, but efficient gardening. When we use proper techniques to landscape and garden, we actually save money, time, energy and water over the life of the garden.
The basic principles of Xeriscaping are:
Planning
Soil preparation
Reducing turf areas
Plant selection
Proper irrigation
Mulching
In planning, group plants according to their water and lighting needs. Place taller plants in back areas with the shorter growers in the front. It is better to water plants infrequently, yet deeper than to water lightly and often.
This department offers plant varieties that are low maintenance and will work within a Xeric Landscape. Ornamental grasses work well in this environment, although they do require regular watering during their first year after planting so that the root system does not dry out. After establishing their root system, they become almost drought tolerant.
Mulch should be applied in late spring to early summer to help keep the ground cool and moist. Good choices for mulch are shredded bark mulch, pine needles, straw, aged compost, and aged manure mix. Use pine needles with caution as mold can build up underneath when used in shaded areas. Using rocks as mulch, including lava stones, should be reserved for less sunny, shadier areas as the rocks absorb heat during the day and release it during the evening/cooler periods, which in summer often kill the plants.
Here are some links that will provide you with more information on Xeriscaping. They are filled with great ideas that will help new and old gardeners alike to create more efficient outdoor spaces.
http://www.ext.colostate.edu/PUBS/GARDEN/07228.html
http://pubs.caes.uga.edu/caespubs/pubcd/B1073/B1073.htm
http://aggie-horticulture.tamu.edu/extension/xeriscape/xeriscape.html
http://www.coopext.colostate.edu/4dmg/Xeris/xeris1.htm
