There is a right height for every lawn, and in the flat heat of a Chatsworth July, finding it is the whole argument. CUTLOW LLC. mows to that number — weekly or biweekly, blades kept keen so bermuda tips are severed rather than torn — then trims the fence lines, edges the concrete and blows the surface off. Cut too short in August and the clay bakes; leave it too tall and the lawn loses its shape entirely. Holding the line between the two is quiet, repetitive, satisfying work. The proof is a lawn that stays even from the first cut of the year to the last one in November.