Shirobana spirea requires fertilizing every few years, pruning and watering. When planting Shirobana spirea, a hole should be dug twice the size of the roots and as deep as the plant was in the container. The plant should be placed in the hole, and the hole should be refilled with dirt and mulch.
Shirobana spirea, scientifically known as Spiraea japonica 'Shirobana', is a deciduous shrub. Its leaves are green and grow up to 3 inches long. The plant produces white and pink flowers in the summer. Spiraea spirea is native to China and Japan.
Spiraea spirea can be pruned by pinching, thinning, shearing or rejuvenating. Pinching involves removing the stem tips from branches. Thinning means removing branches to let in more light and provide better circulation. Shearing involves clipping the surface with shears to maintain the plants shape, and rejuvenating involves removing old branches to reduce the size of the plant.
Spiraea spirea is affected by aphids, powdery mildew, caterpillars, blight and leaf spots. Aphids are small insects that suck the fluid from the plant. Aphids can stunt the plant's growth and transmit viruses to the plant. Powdery mildew is a fungus that kills leaves. It is found on plants with inadequate air circulation. Caterpillars eat the leaves and stems of the plant. Blight is caused by fungi or bacteria, and it kills the plant's tissue. Leaf spots are caused by fungi or bacteria, and it damages the plant's leaves.