Hello dears!

I have a very small area, perhaps 150 square feet

that is now grassed. I plan to sow heavy with a mixed wildflower seed.

Before seeding, I plan to put down about 3 inches of soil. I will throw out the seed, and then tamp it in, by walking over it with my boots.

Please answer following:

Question 1: What should I do with the existing grass ? Won't the 3 inches of soil kill the grass ? Or, should I first kill the grass with roundup ?

Question 2: What keeps grass and weeds from growing back in this area ? It would seem that in about two years, the grass would be as high as the

wildflowers.

What's the right way to go??

Thanks for any advice on this.