Sub-freezing temperatures are forecasted for the Phoenix Metro areas this coming weekend. Make sure to wrap any above ground irrigation piping, and if possible, drain them with the ball valves open 1/8 of a turn (half open). If shut down and drainage is not an option, schedule drip zones to run long cycles over night far from sidewalks, trails, or places of gathering to prevent slips and injuries during the morning hours. The constant movement of water helps to prevent water from freezing since water in under-ground piping stays above 32F. This is also a good practice for your own system at home whether it’s for irrigation, pool, or the water service into your house.
Cover frost sensitive plants like Bougainvillea, Hibiscus, Lantana, and Winter Annuals. Use any paper or cloth-like material (old sheets or towels) to cover the plant. Frost cloths are also available at local nurseries or home improve-ment stores. Make sure to cover the plant all the way to the ground to help trap any heat radiating from the ground. Plants that are dry are more likely to get frost damage, so water them before the frost.
Delay mowing start times for later into the day, after the frost burns off. Frozen grass is not only a safety issue but heavy equipment and even walking on turf can cause damage.
