If your plants are suffering from temperature changes, neglect, or mineral salt build up, try FoxFarm Bush Doctor Boomerang Comeback Formula! This immediately available supplement helps support the root zone with soil microbes. Can also be used as a vegetative supplement. 2 - 0.2 - 0.3 (2 nitrogen - 0.2 phosphorus - 0.3 potassium). 1 liquid pint. Always read and follow label directions.