We have planted Dwarf Mondo Grass about 3 years ago on one side of our patio where the trees shade to much for St. Augustine Grass. The Dwarf Mondo Grass is growing but very slowly. It has some weeds in it now, and I was wondering if I can fertilize it with Weed and Feed? If anyone has any information on Dwarf Mondo Grass this would be really nice. We are new to this, and we would like to have it spread faster.