I have cosmos and marble four oclocks for trade or i will send sase.I would like to find some unusual grass or zebra grass seed.The dark color grass are very nice also. Thanks

It'll probably keep coming back. It's a spreading grass (which is why it's called creeping bentgrass) so it'll spread if the area next to it is bare.

A couple of questions first...did you have any creeping bentgrass in the yard 2 years ago? Did you purchase a custom blend seed mixture from a garden center, online, or contractor supply store? When you say Blue velvet..I am assuming that you mean Kentucky Bluegrass variety "velvet". THe only reason why I ask is there is a velvet bentgrass that is used in golf course putting greens. Off the top of my head, there are a couple of things that could have happened. 1. The seed mixture you bought was not blue tag certified. That means it was not weed free. Creeping bentgrass is a weed only by the fact that you don't want it. 2. Certain box type seed mixtures will prodominately display the 3 variety blend you mentioned but again there is probably additional seed listed or a % listed as weed seed. 3. It is possible that animals/birds could have possibly transferred live seed and deposited but...that is the least likely in this situation. So, getting rid of the creeping bent. Getting rid of cool season grasses within a stand of cool season grasses is tricky if not impossible by chemical means. The fastest way would be to use roundup on a sponge brush and dab the plant surface. Effectively killing the just the creeper. Waiting for the Kentucky to overtake is not going to yield the results you want...it will most likely spread. Get it now while you have the chance. Your cultural practices are sound for KB so that is not the cause of infestation. Hope that helps.

You have to get the roots of the invader out of the Zebrinus clump. If you cannot pull or tease them out, then you must dig out the clump and remove them that way. This should not effect Zebra's performance this season, especially if new growth has not yet emerged. If you do this, keep the plant watered (moist), treating it as though you have divided it. There is a more drastic measure: systemic herbicide, but ONLY if the Zebrinus is still dormant. I do not recommend it, but it can be done carefully by "painting" the blades of the invader with the herbicide.