In general, any organic mulch spread 1 to 3 inches deep at the base of a cedar hedge will help control weeds and conserve moisture. Mulches that echo the scent and beauty of the plant, such as cedar wood chips or pine needles, make an especially nice touch. Keep the mulch at least 2 inches from the plants' trunks.
About this Author
Melissa Jordan-Reilly has been a writer for 20 years, both as a newspaper reporter and as an editor of nonprofit newsletters. Among the publications in which she has published are, "The Winsted Journal," "Taconic" and "Compass Magazine." A graduate of the University of Connecticut, Jordan-Reilly also pursues sustainable agriculture techniques and tends a market garden at her Northwestern Connecticut home.