by Phil on January 4, 2011
Pressure Vacuum Breaker
Now that we are experiencing lower temperatures and (finally) some rain, it would be a good idea to winterize your irrigation system before the next hard-freeze. The following steps will help protect your sprinkler system and backflow device from damage due to freezing temperatures:
1. Turn “OFF” the manual shut-off valve (usually located near the meter) by rotating the handle 90º.
2. Briefly, cycle through each zone (from the controller) to relieve pressure in the main-line and zone pipes. The residual water in the pipes will then be below ground and not under pressure. Leave the controller in the “OFF” position.
3. If you have a Pressure Vacuum Breaker (PVB), open the test cocks with a straight screw driver and rotate both valve handles 45º to prevent freezing/locking in the open or closed position. Wrap/Cover the PVB (and any exposed pipes) to further prevent freezing.
In the BCS area, we would have to experience many consecutive days of freezing temperatures to damage below ground pipes. Your main concern should be any part of your sprinkler system that is above ground level and/or your PVB. If you have any questions, let me know.
by Phil on September 21, 2011
Knock Out Roses
NOW is the best time to plant your new landscape. Springtime planting may be good in some parts of the country, but the fall season is actually better for planting and root establishment. According to Texas Nurserymen, “Plant roots grow anytime the soil temperature is about 40° F or slightly higher, and this occurs nearly all winter long in most of the state. The root systems of the fall-planted specimens thrive and become well-established making it possible for the plant to take advantage of the full surge of spring growth.*” Trans-planting shock is also minimized.
If you are making significant changes to your landscape, don’t forget about your irrigation system. Most systems are designed/installed to accommodate a specific landscape. The high-pressure stream from a rotor head will wreak havoc on a flowerbed. Before you alter the footprint of the original landscape, consult with your irrigator to determine the best plan to modify the coverage of your sprinkler system.
Be sure to plan ahead and provide all your new plants with the appropriate delivery of irrigation.
*David Rodriguez
Texas Cooperative Extension
The Texas A&M University System Extension Horticulturist &
Bexar County Master Gardener Coordinator
3355 Cherry Ridge, Ste. #212
San Antonio, TX 78230-4818
