I have had prolific blooming bushes for about eight years; however, last spring they did not have one single flower! Now, the bushes just look thin and 'sickly. ' What should I spray on them or put powder or liquid insecticide in the ground for the roots to absorb?
Gardenia Diseases or Insects
Certified GKH Gardening Expert
Give the plant some balanced fertilizer or compost and I would recommend treating it with neem oil for the pests. I like neem oil because it effectively kills most pests that damage plants while not affecting people, animals and beneficial bugs. Here is more info on it: