4 numbers mean they were conventionally grown, 5 numbers starting with number 8 means they are genetically modified (gmo), and 5 numbers starting with 9 means they were organically grown (no pesticides or gmos)
of liquid food coloring to 1 cup of water. Drizzle the colored water onto the soil surrounding the base of a plant. Wait 24 hours for the water to absorb. Apply another identical dose if the color change was not sufficient.