new construction, wasnt hydroseeded till about October 10th (very late in the fall). the grass came up but got really cold here in the northeast a couple weeks later. Some bare spots and thin. Fertilized before winter as well. what should I do in the spring? will the remainder of the seed germinate in the spring? since it is a new lawn/soil is it okay to aerate in the spring or is it pointless since the soil is new? i was planning on aearating, overseeding, fertilizer + weed control.