It’s going to be warming up and everyone will start watering their lawns with urgency. With the warm weather and water, come those irritating and possibly disease infested mosquitoes.
What do mosquitoes have to do with yards? When you over water your lawn the earth beneath doesn’t dry out and creates a perfect mosquito habitat. There are certain species of mosquito that will lay eggs in the damp mud and the next time your water comes on; the water sits on top of the earth for a period of time that allows the mosquito eggs to hatch. On warm days it doesn’t take very long for a mosquito to go from egg, larvae, pupae to adult. Once the female adult mosquito hatches, it looks for a blood meal. Yep, you and your family!
I would also like to point out that sometimes your sprinklers soak more than your landscape. Sometimes the water fills up buckets, flower pots, wheel barrows or other items left outside. This water then sits, heats up and then becomes stagnant. Female Culex species of mosquito love to lay their eggs in this water. This species can carry West Nile Virus and transmit it to you and your family with one bite.
You can help keep you and your family safe by making sure you are watering your yard properly and that your sprinklers are only watering the things they should be and that they are not leaving puddles below the heads.
There are many published articles on the web about how to water your type of grass and how much water is enough...and the kind of pests that can flourish in unhealthy turf. A great publication for Idaho residents to refer to for guidance is The Pacific Northwest Handbook .
The “Rule of thumb” that is widely used is: water as deeply and as infrequently as possible. This stimulates root growth resulting in healthy drought tolerant and pest resistant turf (like mosquitoes)! A healthy root system produces vigorous turf: rooting depth is determined primarily by genetics and soil condition, not irrigation!