WEDNESDAY, April 10, 2013 â A common virus affecting 79 million Americans, already known to cause cervical and head and neck cancers, may also be linked to lung cancer, according to preliminary research findings presented at the American Association for Cancer Researchâs annual meeting.
Organic mulch is material that is applied to the surface of garden soil to protect plantings and improve soil structure. Mulch is considered organic if it is made of material that was previously living plant matter. Examples of organic mulch include shredded leaves, compost, and crushed corn cobs.
Dyed mulches are typically made from bark, wood chips or other wood by-products that have been artificially colored with a water-soluble dye or stain. Dyed mulches are available in a wide range of colors, including black.he contrast between brilliant green foliage and deep black mulch is appealing to some gardeners, and black mulches are made from a variety of materials, both organic and synthetic.