Attracts bees, hummingbirds and butterflies, plants grow 1-2′ tall. This ancient herb has been used for centuries, and as a tea is soothing for colds, flu, and bronchitis. The aroma of hyssop is bitter and sweet. Stems and leaves carry an essential oil useful for treating respiratory complaints and may support the immune system. Hyssop is also helpful in stimulating alertness and to relieve anxiety, arthritis, asthma, respiratory infections, parasites, sore throats, and more.