Plant Taxonomy of Gold Mound Spirea: The taxonomy of Gold Mound spirea is Spiraea japonica 'Gold Mound.' The latter is the cultivar name, which is a propos on two levels: the color of the leaves and the shape or habit of the bush (see below).Plant Type: Gold Mound spirea is a deciduous flowering shrub. The genus is part of the rose family.he taxonomy of Gold Mound spirea is Spiraea japonica 'Gold Mound.' The latter is the cultivar name, which is a propos on two levels: the color of the leaves and the shape or habit of the bush (see below). Plant Type:
Holly Leaf Spot Symptoms. The symptoms of this holly disease are easy to see. Most types of holly plants will first show black, yellow or brownish spots on the leaves. Eventually, the leaves will start to fall off the bush. Typically, the holly leaves will start to fall off the bottom of the plant and work its way up the plant. Leaves will normally fall off the plant in the spring, but the spots will first appear in the late fall or winter.
Other Problems. Bud Drop: Camellia flower buds may drop off of the plant before opening or the tips of the young buds turn brown. Prevention & Treatment: Bud drop can be caused by several different factors. One of the most common causes is large fluctuations in temperature or moisture.eaf Gall: This disease is more common on sasanqua varieties of camellia (Camellia sasanqua) than on Camellia japonica. It is caused by the fungus Exobasidium camelliae. Leaf galls are most often observed during the spring flush of growth.