Plus when I use the plant food how do I use it?

The recommended strength is 1/4 tsp per gallon.
JohnHerer Reviewed by JohnHerer on . Vegetation plant food I found a plant food at a store. Is it ok for vegetation? Shultz Azalea, Camellia, Rhododendron Plant Food Feeds All Acid-Loving Plants 32-10-10 Total Nitrogen (N) 32% 1.0% Nitrate Nitrogen Rating: 5