burning bush when to and type of fertilizer required?

Question

my burning bushes need fertilizer and I wish to information about care of bushes.

Answer 1

Each spring, feed the burning bush just after the plant begins to put on new growth. Use about 1/2 cup of tree and shrub fertilizer per bush. Sprinkle the fertilizer on the ground over the root area of the bush. Rake the granules into the top 1-inch of soil and water thoroughly to start the fertilizer traveling down to the roots.
https://www.gardeningknowhow.com/ornamental/shrubs/burning-bush/burning-bush-care.htm