So we recentyl sodded our yard and spent many weeks digging these weeds (or grass seed/bulbs up) out of our lawn. Once we put fertilized, sodded and put much water to the lawn these starting sprouting up all over. I guess its a type of grass but these bulbs or seeds are anywhere from 4 to 10 inches deep and grow like spider webs and often have many bulbs connected. They grow faster then the lawn and are very distinct in our new lawn which is medallion plus (fescue and bluegrass mix) I have attached pictures. Thanks for any help on this matter. Also is there any way to get rid of them that doens't hurt my new lawn?