(Gardenia jasminoides 'Kleim's Hardy')
Daisy Gardenia - Kleim's Hardy Gardenia Feeding Instructions
Fertilize Summer-flowering shrubs in Spring (after new growth has begun to emerge), and again, if needed, in late Summer to early Fall with a well-balanced tree and shrub food or an organic plant food. When in dought as to how much fertilizer to apply, follow instructions on the product label.
Daisy Gardenia - Kleim's Hardy Gardenia Pruning Instructions
This evergreen summer-flowering shrub requires no pruning. However, during any time of year it is okay to remove stray or broken branches, or shear to maintain a neater appearance or encourage another flush of blooms. Hard pruning, to reduce the size of the shrub, should be performed in late Winter; before new foliage has emerged. Hand-pruning, with sharp hand pruners, is recommended. Pruning with electric or gas-powered hedge trimmers can cause unsightly scarring of leaves.
Daisy Gardenia - Kleim's Hardy Gardenia Pest Instructions
Several insects and diseases might show up on your gardenia. When a black "sooty mold" coats gardenia leaves in Summer or Fall, it is usually due to an infestation of insects such as aphids, mealybugs or whiteflies. These insects leave behind a trail of sticky residue on the leaves. The smut-like, sticky substance does not injure foliage, but can prevent sunlight from reaching the leaf, thereby reducing photosynthesis. In the event your gardenia becomes infested, spray plants 3 times at 10 day intervals with Malathion, or a product containing Neem oil. Make sure to spray the undersides of the leaves. Root rot can be a problem in poorly drained soils.