I am new to this forum. I recently purchased a home in Northern Delaware, and to my surprise, practically overnight, my lawn and backyard was overrun by these weeds (there are more of them than grass) as soon as it got warm out. I am not sure what to do. The neighbors yards have similar growth of these weeds, but no where near the extent that I do.
Here are some pictures:
If someone can identify them, can you also please tell me what I need to do? Because they are all over the place, should I contact a professional?