There is a newer mulch, It is made from paper, has holes in it like a screen to allow water and air to pass thru. It is also bio-degradeable, It starts to rot down after about 3 months. Might be a better choice. IR Mulches, At Seminars with Dr Otho Wells, UNH and Dr Richard Ashley of UCONN. IR mulch works well with tomatoes, because tomatoes respond to it as weed competition and will grow faster. However peppers do not respond to weed competition. Yeild increases of peppers and IR mulch were less than 1%. Dr Ashley and Dr Mike Orzolek at Penn State show a yeild increase of about 5% in peppers using green mulch. White/Aluminum mulches will reduce aphids, but will also bake your plants when it gets hot. Yellow will attract aphids Blue attracts thrips. Black, warms soil in cool weather, but bakes the roots and dries the soil in hot weather. My choice, None Byron