How UV Rays Could Be Damaging Your Lawn

Published : 02/22/2021

Sun exposure is the most important elements for growing lawn, but just like us, if your lawn gets too much sun it can get damaged. Overexposure to the sun can damage your turf in two main ways:

Excessive exposure to infrared radiation can cause epidermal damage or overheat the soil, which leads to heat stress. Heat stress can cause your plants to shut down its photosynthetic process. This can be identified through the rapid browning of your lawn and wilting grass.

Ultraviolet(UV) radiation can cause damage to your lawn that is similar to sunburn in humans. This will damage the turfs DNA and will inhibit photosynthesis and the transpiration processes. These processes are responsible for growth and water evaporation. This will mean the grass will not be getting the appropriate nutrients from the sun and will be unable to rid themselves of all their water.

While UV and infrared are different stresses, they can both result from excessive sunlight.Some turf types are more restistant to this, your choice of turf should consider how much sun your lawn will be getting daily and the general climate of your region

Turf growing on south facing slopes are more susceptible to heat damage as it is exposed to sunlight over a longer period of time. Grasses growing in these locations may also experience runoff while watering, meaning it does not have enough time to be absorbing the waters nutrients.

Turf experiencing heat stress is more vulnerable to damage from other summer related stresses including scalping, traffic and wear, warm weather fungal diseases, poor water quality, poor soil drainage, poor air movement and insect damage.

Mowing your lawn less often, fertilising your lawn and regular watering will help prevent your lawn from heat damage. Our friendly technicians can provide expert advice on caring for your lawn during the heat. For more information, get in contact today!