Hi all,

I hope this is the right section to post my question. My backyard used to be full of trees and impossible to walk in. There were some type of weed growing in it and the trees would create a shade everywhere in my backyard.

I had all my trees cut, cleaned the backyard and put grass seeds everywhere so now it looks very nice.

A couple days ago, I noticed the same type of weed is back and it's covering my whole lawn very quickly and ruining my new lawn.

I was wondering if someone could please tell me what type/brand of weed killer I should buy to take care of this unknown weed! Here are some pictures I took to help you identify the type:

http://s29.postimg.org/ecqeza4yv/image.jpg

http://s30.postimg.org/7v5o9ur0h/image.jpg

http://s28.postimg.org/wek4aa05p/image.jpg

http://s16.postimg.org/4dfovrk2t/image.jpg

http://s16.postimg.org/gtcepidet/image.jpg

Thanks in advance

Here is a link that might be useful: