Sphagnum moss is excellent for growing orchids for many reasons: It retains moisture, and can hold many times its weight in water. As soon as your orchids put out roots, the root tips are comfortably ensconced in moist organic material that support their continued growth. Your orchids grow healthier and stronger! Grade AAA moss lasts a long time. You will not need to repot your orchids for 18 months or even longer, depending on how often you water (the more water, the faster any media will break down). Certain types of orchids will continue growing just fine even in sphagnum moss older than 18 months! Another excellent property of Sphagnum moss: its springiness. it retains air space at the root zone, which is absolutely critical for orchids. Orchids are typically epiphytes (growing on trees or other support structures) and often have aerial roots. These roots need to have the flow of air molecules past them, or they will suffocate/drown. (That's why you don't grow orchids in dirt: it suffocates the roots, leading to a dead plant!). The springiness of sphagnum creates air space around the roots, an ideal environment for robust root growth. Strong roots mean strong and beautiful orchids! Sphagnum moss also has antimicrobial properties, which can enable it to fight off pathogens that might infect your orchids! For recovering rootless orchids, nothing works as well as moist sphagnum. Wrapping the base of your struggling plant in high quality sphagnum moss and keeping your plant in a humid environment with air flow will greatly increase the chances of your plant surviving. Please message me with any problems I am sure we can work it out! Just take a minute, send me a message and I am sure I can make you happy. I am very nice and try my hardest to treat my buyers the way I would like to be treated. Thank You, Syukur