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Water-wise Gardening

By now you probably received your water bill, the one that included the cost for the water you used trying to keep your garden alive during the recent drought.  We can relate and feel your pain.  So, here are some water-related facts and some water-saving tips to be prepared for the next dry spell.

Effective Irrigation

Did you know that more plants are killed each year from over-watering than from lack of water?  One portable lawn sprinkler operating 1 hour uses 360 gallons of water.  That’s the equivalent of 12 five-minute showers, 50 runs of the dishwasher, 225 flushes of a toilet, or 12 loads of laundry. 
Tips for effective irrigation:
  • Water at night or early morning.  For most efficient use of water, irrigate between 9 pm and 10 am to minimize water evaporation.
  • Use drip tubing, an ooze hose, or a hand-held hose to direct water to those plants that need water.  Sprinklers spray a broader area and much of the water may miss the target.
  • Use a timer or rain sensor on your irrigation system to avoid over-watering.
  • Water only plants that need water.  Learn about which plants need how much water, i.e. ½- to 1-inch of rainfall per month is enough for most established woody ornamentals.
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Preserving Moisture – The Benefits of Mulch

Last but not least, mulch is a gardeners' best friend.  It can help prevent evaporative water loss, insulates the roots of your plants from extreme heat (and cold for that matter), and it reduces weeds which compete not just for the nutrients in the soil but also for the available water.

The best mulch is organic, fine textured, and non-matting.  Generally 3 to 5 inches is sufficient.  Make sure the mulch is well-composted.  ‘Green’ mulch can rob plants of essential nitrogen.  You can place landscape fabric or newspaper (2- to 3-sheets thick) under the mulch to help provide an added barrier to moisture loss. 
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Picking the right Plants

Turfgrass, aka our lawns, have the highest requirement for supplemental water of any plant in the landscape.  Replacing our lawns with alternative plantings can help to conserve water (and may overall be less maintenance).  Ground covers or native plants that are more tolerant of moisture extremes may be good options.  Other alternatives include a wide variety of drought-tolerant plants available, including Juniper, Crepe Myrtles, Yapon Holly, or Oaks for example

If you choose to keep your lawn, keep in mind that different grasses have different water requirements and different levels of drought tolerance.  Next time you re-seed your lawn, consider options such as a Hybrid Bermuda Grass or Zoysia, both of which are much more drought tolerant than Fescue Grass. 
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Master Gardeners of Rutherford County will be happy to answer your garden-related questions here:  Ask Us!

Additional Reading on Water-Wise Gardening:
https://utextension.tennessee.edu/publications
www.xeriscape.org
www.waterwisegardens.org/
>> Or contact our Speaker Bureau
By: Sabine Ehlers, CMG - 7/15/2012
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Programs in agriculture and natural resources, 4-H youth development, family and consumer sciences, and resource development. University of Tennessee Institute
of Agriculture, U.S. Department of Agriculture and county governments cooperating. UT Extension provides equal opportunities in programs and employment
Photos used under Creative Commons from Poldavo (Alex), Nick Harris1, Gregs Landscaping