One of the most widely used medicinal herbs. St. John’s Wort can be brewed as a tea to treat the symptoms of insomnia, depression, and anxiety. It can also be used topically in the form of essential oils to treat sunburn, arthritis, and muscle pain. The plants are easy to grow and will tolerate any soil type. Starts seeds 4-5 weeks indoors for best results once transplanted outdoors. Warning: can become invasive in some areas, and in large quantities may be toxic to some livestock.