you wouldn't happen to know optimal NPK ratios for spring-time application on lawns do ya?
I usually wait until the rains stop to put nitrogen on the lawn,unless you want to cut it 2-3 times a week,it does fine on its own,mid june I might do a light fert 10-10-10 or a really natural one like Sea-Blend,ealy spring if you can get a broadleaf weedkiller w/real low npk numbers,early mid june a crabgrass preventer,and early july a insect(grub) treatment,I only put that down ev. 2-3 yrs. All the Scotts ferts have crazy hugh N numbers,The more you put on for ferts,the more dependent the grass becomes. I don't keep my yard to g.course standards,don't waste water,and remove weeds by hand a lot.Have a lot of birds and try to stay away from a real chemmed up lawn.Golf Courses have no choice the turf is cut so low the diease pressure is insane,which means biweekly preventitive disease and insect treatments.I'm just a staff member w/a spray app. license and don't pretend to have all the answers,just like diease in hospitals dev. resistance to antibiotics turf diseases dev resistance to fungicides and a different array of products end up being used,same for insects by the way,they also dev. tolerences to pesticides. I just want a acceptable lawn near my home and let the rest of the yard go,in the west and desert areas lawns are being seen as wasteful w/water becoming scarce.