Generally, once your plants are established you should spray their leaves once every three weeks. You shouldn’t harvest for three days after spraying because it affects the flavor of the produce. The nutrient is not toxic in anyway and contains fish emulsion, fish powder, sulfate of potash, powdered sugar, humic acid, sulfur, corn calcium, sea weed, kelp and yucca extract; it’s all good, that is so long as you don’t taste it {or smell it - blah!}. Read the Garden Master’s exact instructions on the nutrient application by clicking HERE.
Note: the nutrient can be purchased from the Garden Master for approximately $8 per bottle {one bottle should last about a year for a 4'x 8' garden}