One of the best herbs to speed healing of respiratory infections. Dig roots in fall of the plants 2nd year of growth, chop, dry and store in a jar for cold and flu season. When you feel a cold coming on, simmer roots for 20 to 30 min, pore into mug, sip and relax. Our 2nd year plants in gallon pots have strong root systems and will provide you with generous harvests this fall. Easy to grow. Avoid waterlogged soils.