No, Hi-Yield Systemic Insect Granules cannot be used on any edible plants. You can browse products that we sell for use on edibles here.
We would recommend waiting 7 days between applications of a fertilizer and Hi-Yield Systemic Insect Granules. These granules do have a systemic mode of action using the active ingredient Imidacloprid and will protect the plant at the root zone and up the through the plant. Per the product label, these may be applied at planting and repeated every 8 weeks during the growing season
Apply Hi-Yield Systemic Insect Granules evenly and work the granules into the 1 to 2 inches of soil. Please follow the chart on page 2, it gives you measurements depending on the size of your plants. Please read the product label for complete application instructions.