we have a steep slope at one of our shopping centers thats kind of bare and weedy . the owner wants to do something in there. do you have any ideas?? slope is about 100 ft. long. it is about 25 feet deep (front to back) and it rises about 15 feet (bottom to top) soil is poor, drainage is good (out into the parking lot!!lol) ground doesent get much of a chance to absorb water because of rapid runoff. area will be in full sun. mulch will likley not hold, due to steepness. i dont want to put grass in because, 1 impossible to mow. 2 it can be cut with a string trimmer but its very dangerous. any ideas???