Cactus Drops provide the nutrients your cactus needs and keep it fresh and growing. Consumption Guide: Large cacti dissolve 30 drops, an average of 20 drops and a small 10 drops in half a liter of water (equivalent to a small mineral water). Irrigate once every 15 to 20 days from the prepared solution as much as the water used by the plant. In order to achieve better and faster results for large and medium cacti, it is recommended to use this drop of fertilizer for houseplants and houseplants of this company in the next fertilization. (2 weeks later) Use.