When the temperatures start dipping down, starting in late November, it is time to stop fertilizing the lawn but before that a full lawn treatment must be done to ensure your lawn wakes up in the spring with a healthy green color and is protected all winter. A sign that it is time to prepare your lawn with a late fall lawn fertilization is when the grass starts growing to slow that it doesn’t require mowing. If it is a particularly warm winter then a late winter application of fertilizer, toward the end of February can be beneficial.
Fertilizing in the late fall to prepare for the winter helps bulk up plant roots, providing them with extra resources to carry them through their dormant period in the cold months.
This is also the same time that the sprinklers should be ‘Blown Out’ so they don’t freeze up over the winter, otherwise known as a sprinkler winterization. Here is how a sprinkler winterization should be done but keep in mind, a professional is the only one with a proper air compressor to minimize any damage.
In order to blow the water out of the pipes you will need an air compressor. Most experts recommend nothing smaller than a 50 cubic feet per minute compressor for a home sprinkler system.
Carefully monitor the air pressure, never allowing the pressure in the irrigation system to exceed 50 PSI! You probably won’t even need 50 PSI to blow out all the water. The lower you can keep the pressure, the better. Watch the temperature also while doing a sprinkler winterization! Air heats up as it is compressed. The air can be very hot when it leaves the air compressor, hot enough to melt the plastic sprinkler pipe! It may be necessary to add some extra length of hose between the compressor and the connection to the sprinkler system so the air can cool a bit before entering the sprinkler system piping.
Allow the air to run until all the water is blown out and only air is exiting through the sprinkler heads. Don’t blow air through the system any longer than necessary. If it takes more than 2-3 minutes for the water to get out, stop the compressor and let everything cool down for a few minutes, then start again. Be patient! Keep watching that pressure and temperature!
After only air is coming out of the sprinklers, turn off the air compressor, and then turn off the valve. Open the next valve, turn back on the compressor and repeat the blow-out procedure. Continue until all the valve circuits have been blown out. Note that if you have anti-siphon valves you will need to switch the compressor hose to the next valve riser.
Call Sterling Tree Services and Lawn Care wherever you are on Long Island, to take care of your sprinklers, lawn fertilization and tree fertilization applications, as well as spray for bugs to prevent illness and infestation. 631-283-0906






The Turpentine Beetle is a very dangerous enemy to the Black Pines on Long Island. If you have ever noticed a hole dug into your trees, like someone took a drill through it, then you could have Turpentine Beetles. 


