Aspirin

Marijuana Horticulture

by Jorge Cervantes

Salicylic acid is a naturally occurring plant hormone associated with the Willow. It is effective in preventing pathogens by speeding up the natural “systemic acquired resistance (SAR)” thereby reducing the need for pesticides. Salicylic acid (SA) will block abscisic acid (ABA) allowing the plant to return to normal after a period of stress – something to consider if ABA is being used to strengthen plants.

Aspirin can be used as a spray, a soak, or added to compost and rooting compounds. A 1:10,000 solution used as a spray will stimulate the SAR response, and the effects will last weeks to months. “Willow water” also makes a popular rooting bath.