A note on water-thrifty lawns

I enjoyed “The Proper Look of Paradise” (July 22) but question why writer Emily Green referred to Marathon grass as “water efficient.”

Marathon is a tall-fescue type of grass. But many grasses use far less water, including St. Augustine, Bermuda and Buffalo. The latter requires water only about once a month.

Raymond Tam

Arcadia

Green responds: There are less water-hungry varieties, but Marathon is more efficient than common grasses. I was showing that the conservation experiment wasn’t unfairly skewed against a conventional garden.