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Grass is green because of a bright pigment called chlorophyll which reflects the green color.

www.gardeningknowhow.com/lawn-care/lgen/fixes-for-yellow-lawns.htm

Jan 8, 2017 ... There are many issues that can cause a lawn to discolor. But do you know how to turn a yellow lawn green again? This article will help with ...

homeguides.sfgate.com/green-yellow-grass-38946.html

Improper fertilizing, nutrient deficiencies, diseases and insects can all cause yellow grass. No matter the cause, yellow grass detracts from your home's ...

homeguides.sfgate.com/causes-light-green-yellow-color-lawns-86785.html

Most lawn grasses have a lush appearance and bright-to-dark green color when they are healthy and well nourished. Light-green and yellow shades usually ...

www.flymo.com/uk/lawn-care-advice/causes-and-fixes-for-yellow-grass

There's nothing worse than a lovely green lawn that is spoilt by patches of yellow grass. Continue reading to find out the common causes on why your lawn turns ...

www.livescience.com/32496-why-is-grass-green.html

Feb 20, 2013 ... Like many plants, most species of grass produce a bright pigment ... when stimulated, fire off an electron that causes chemical changes in the ...

www.popularmechanics.com/home/lawn-garden/how-to/g1268/8-things-your-lawn-is-trying-to-tell-you

The brown blades, even when mixed with healthy green blades, are early indicators ... The fungal threads in the soil will initially cause the grass in the circle to ...

www.todayshomeowner.com/how-to-identify-the-cause-of-brown-spots-in-your-lawn

Urine usually causes your lawn to turn yellow in spots, sometimes with a bright green ring around the edges where the diluted nitrogen in the urine acts as a ...

www.briggsandstratton.com/na/en_us/support/maintenance-how-to/browse/how-to-get-green-grass-lawn-maintenance-tips-from-briggs-and-stratton.html

Once you understand the causes for this, you can learn how to restore your grass back to a healthy green hue. Here are the most common causes of green grass ...

www.lowes.com/cd_Troubleshoot+Lawn+Damage+and+Diseases_1262631552_

Spills can cause lawn damage quickly, resulting in yellow or brown spots. ... These spots show up as a dead area with a green ring around it. Flush the area with ...