I was recently asked to fix a bed along the roadway next to a fence by our homeowners assocation. The bed is about 40 feet long and 4 feet wide. Some of the plants have died and the weeds are taking over. I am going to dig up and re-plant all of the plants, lay weed fabric and cover with mulch or straw. That leads me to this question... The bed is acutally on a slope which falls the 4 feet about 25-30 degrees. I am wodering if I should use mulch (I normally put down triple shred hardwood because of the rich, dark color) or pine straw. I am going to need something that won't wash away, and something that will not need much maintainence. Thanks.