Did not mean to be harsh. I am however wise to the idea that it is not reasonable nor advisable to push zoysia to be as green as say, Bermuda or St Augustine. Another thing I can offer is that zoysia showing signs of stress from low mowing is probably not getting enough N. The flip side to the low mow and desert lawns I speak of are the recently installed El Toro lawns. They do get watered, rotary mowed twice a month, and minimal fertilizer. Until the Large Patch and leaf spot catches them, they look ok. If I come in and mow those lawns at 1/2-5/8 with my reel, they are going to need a lot more N and K than what they are getting. P will also be needed if none of the fertilization was done with AG grade 16-15-15, which is the norm for lawn fertilizer in Hawaii. Substituting Fe for N does not work either. I pay attention to how the grass is reacting to both the weather and my mowing practices. A lawn that does not produce at least 1/2-3/4 of growth in 7 days and is not on Primo is a red flag for me. These lawns are already on minimal irrigation. Drought or no drought, the water bill for irrigating 2000 sq ft of grass is around $200 per month. Homeowners do not allow luxurious irrigation.