Look sprouts! These are the plants that I don't like, but that dominate my yard as they are extremely popular round these parts, so the old owners put them EVERYWHERE. People around here call them "Surprise Lillies" because they sprout early and look like tall, thick blades of grass until about June or July then all of a sudden a long flower stalk grows and SURPRISE! you have lillies.
Here is what they'll look like (I got this picture from Lisa Shea)