Our organic listed (OMRI, OIM-CDFA) Houseplant Blend is gentle enough to use with every watering. Its as easy as shaking on the soil and then watering in, or mixing in the watering can before each watering. This is an easy way to add $20 to the average order by suggesting at checkout with a plant purchase. Its small size allows it to be sprinkled throughout the store. One shaker makes over 4 gallons of liquid plant food.