Blazing Hot Florida Sun can Scald the Turf leaving Brown Streaks in the Lawn


By Rick Orr 08/20/2016
Sun Scald on St Augustine grass Caused by Mowers
Sun Scald on St Augustine Caused By Mower

Scald occurs when the leaf temperature reach the max temperature the plant can withstand - then cell walls break down, organelles stop functioning and the leaf blade dies. The most common occurrence of "sun scald" on St Augustine turf is during hot dry weather when mowers with hot tires, travel across a hot lawn on a hot day and cause scald. The grass will recover but it takes time.

Sun Scald on St Augustine Grass From Extreme Heat

Sun scald can appear as a "pock marked lawn" with small 6" circular areas of live grass in a larger area of tan/dead turf in sunny spots in the lawn. These areas will recover when there is adequate moisture and cooler temperatures.


The solution is to keep the turf cool by keeping the soil moisture at medium levels (field capacity). The evaporation of water from surfaces and evapo-transpiration processes of plants cool the plant down. No water – the grass overheats and dies.

Tip: A cooling midday watering can help – it is a myth that watering during the middle of the day damages grass or is a waste of water. A light sprinkle of water on the lawn is like jumping into a pool for the lawn – it cools and refreshes. Also, if possible mow during the cooler times of the day and mow at the highest setting on your mower.

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Rick Orr Owner-Operator APL Pest Control/Creator of ILOVETURF.COM
APL Pest Control

Rick Orr is the creator of, Owner/Operator of APL Pest Control and a graduate from VA Tech in Agronomy (Turf Ecology).  

Since 1980, Rick worked in the green industry, mostly with golf courses, resorts and large communities. Rick worked as a Golf Course Superintendent of Fripp Island Resort, agronomist for Seaside, FL and the spray tech for Vinoy Golf Course. Rick has been certified as an arborist, landscape and irrigation contractor and adjunct professor for Environmental Horticulture (SPC) in Pinellas County.  

Home Pest Control came naturally. Entomology (bug science) was part of agronomy studies. Nearly every indoor pest problem starts outdoors. Crossing over to home pest control from lawn spraying was a natural process – the technology, methods and materials used for home pest control are modifications of the ones used for lawn spraying. 

The results of that work is a one of the top rated pest control companies in Pinellas County – APL Pest Control. APL Pest Control is a family owned business serving residential and commercial properties in Pinellas County, FL. 

Free Price Quote for Home Pest Control and/or Lawn Spraying CLICK HERE

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Speaking Engagements - Does it seem like you are only hearing one side of water restrictions, fertilizer bans, plant restrictions, and many other urban landscape hot topics? Rick Orr is available for speaking engagements for your HOA, Community or Professional Association or Garden Club about a variety of subjects. To contact Rick you can find him on FacebookTwitterLinkedIn and Instagram for booking information.