Are your eyes deceiving you or is your grass really Greener? The short answer to this is, No. There are many reasons why rain water helps your lawn green up more than regular watersing.
Why Does my Grass look greener after rain?
Dated: June 23 2020
Are your eyes deceiving you or is your grass really Greener?
The short answer to this is, No.
There are many reasons why rain water helps your lawn green up more than regular watersing. Most irrigation systems are utilizing water that has been treated and have additional chemicals added to the water. In many cases this treament can actually cause your grass or plants tonot absorb the nutruits in the soils as quickly.
Rain water actually carries nitrogen with it as it falls to the ground which causes your grass to gree up faster. Many factors impact how much nitrogen falls in the rain. A few of these factors are you area and where you live and how dry its been in your area.
Here is how it works: As plants grow they have small root that die off and new roots grow. When this happens, soil microbes casue the dead root to decompose, very similar to adding compost to your garden. However all of this happens underground where we cant see it. These roots cary many chemical compounds, which is mostly carbon but also some nitrogen. These soil microbes utilize carbon and some of the releassed nitrogen to cause the dead root to decompse. When this happens, some of the nitrogenb is then released back into the soil.
As the rain soaks and washes deep into the soil, this activates the microbes to release more nitrogen. Your grass benefits from this new rain because it flushes the soil allowing it to take up the "new" available nutrients. The final process then starts with Photosynthesis when the sun peaks out behind the clouds.
Typically Nitrogen is the primary ingrediant in fertilizer sold at many of the home & garden stores. Applying fertilizer will impact your grass tremendously if applied properly. To know specifically what your yard needs you need to start with a soil test and understand what your soil is lacking to replenish. Below is a great website to understand your lawn and especially Bermuda grass which is the primary grass planted in North Texas.