http://www.garden-counselor-lawn-care.com/crabgrass-pictures.html Above is the place which I used to confirm crabgrass in my lawn. I appreciate your concern and I am really grateful, longer I think about it I have more doubts. Today is already dark outside but I will try to take few pictures tomorrow. I do not have macro lens and I am not sure what will be the quality of the picture. Is there anyway to attache it to the thread. I do not think I have seen head or flower of this weed (I wonder I could recognize it? :) ). I cut the grass on Friday and everything looks even but the weed in question is definitely lighter in color Here is a link that might be useful: Garden Conselor

You are only looking at granular products. Weed-be-gone and many generic and similar products are a liquid BROAD LEAF WEED KILLER. They come in a can with specific directions for use. They are mixed with water and applied via a sprayer. A 3 gallon pump-up sprayer works good. Read the label and instructions carefully before you buy in order to get the right stuff. There are herbicides that are non-selective, that is they kill everything. Round-up is an example. You do not want that. Read and follow the directions carefully. You do not water after applying weed-be-gone. These products are available everywhere lawn supplies are sold. Bill Hill

That's smartweed, an annual weed. I believe that mowing would be an effective control to keep it from reseeding. they're shallowly rooted so if the appearance bothers you, pull them out. Jeanne

Lawns in this area are typically comprised of blends of cool season turf grasses. That means they grow when weather is cool and go dormant when weather is hot........in as mild a winter as we have experienced so far, it is not at all unusual for lawns to become long, straggly and needing a mow. Lawn services and homeowners have already been busy in my area tending to this. You can certainly start to fertilize now (although it is still just a tad early - we could still get some cold winter weather). But I seriously recommend avoiding any "weed and feed" product. These types of lawn care products are notorious for contributing heavily to groundwater pollution, can be harmful to both small kids and pets and are incredibly inefficient.At one time there was talk of having these weed and feed products banned from the PNW marketplace because of their highly negative impact but it never got past the serious discussion stage AFAIK. Separate the two products - use a dedicated lawn fertilizer (an organic product - not Scotts - is always a good solution) and treat weeds individually. If you have a widespread weed problem - too much to manage by manual removal - then use a spray like Bayer's All In One Lawn Weed and Crabgrass remover, which can be used to treat individual weeds or sprayed to address the entire lawn. As a liquid, this is far less likely to leach into groundwater than a granular product and can be directed specifically where needed. Most often, a well maintained and healthy lawn will outcompete weeds so you need to focus on getting your lawn into good shape. Mid April to mid May is the ideal time in this area for lawn renovation and reseeding chores. Most regions in the PNW will have some sort of community or municipality provided lawn care publication that will provide both tips and a calendar of necessary lawn care chores. Here is one provided by the OSU extension service.