Mine developed yellow spots about this time last year and I treated for grubs.Bye bye yellow spots. You might want to take a plug to a nursery.
We use weed n feed every spring and every fall for our grass. We've tried off brands, but not with much luck. It is a little pricey, but it makes a world of difference
What type of grass do you have, Jimmys? If you have tall fescue, which is common in your area, it naturally goes through a period of dormancy when it is hot and dry in the summer, and it takes a lot of water to counteract that. What did you spray?
To keep fescue reasonably happy in the heat of summer it needs a measured inch of water applied once per week.
thank you all for your advices
i spray because it has little has Phyllopertha horticola και Hoplia philanthus
garden chafer is common in Great Britain...not so much here. Did you find white grubs in the soil?
no i didn t found this time only in the spring
Wondering what type of grass you have? Here, the zoysia has taken a major beating this year and last. Brown Patch fungus is rampant.
pull up a plug of the grass and if there are no roots, you have grubs, don't use a multipurpose bug killer, get grub killer at IFA