At Beall's Greenhouse Nursery and Supply Plum Borough PA we sell mushroom manure to fertilize your Pittsburgh landscape lawn, garden and flowers. We offer a full product line of bulk mulch in red, gold, brown and black that will keep their color all season long. We stock natural hardwood mulch, double shredded and triple shredded, that will break down into your soil faster. We also carry organic supplies, decorative rock, stone, gravel, limestone & more. Redeem our online coupons; save on supplies.