Subterranean termites live in soil and feed on cellulose causing widespread damage to wood. Organic mulches used in horticulture and nursery management for various benefits are by-products of wood. This study was to investigate: 1) foraging preference of existing termite colonies towards selected organic and inorganic mulches under natural field over a year period; 2) preference of termites initiating new colonies in the selected mulches under field conditions; and 3) suitability of aged mulches as food sources in non-choice tests measured by survivorship, mulch consumption, and termite weight change. The eight landscape mulches evaluated were: pine straw, pine bark, pine fine, pine shavings, cypress, cedar, compost and rubber, with southern yellow pine wood served as control.