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.
Light â Rose leaves turn yellow and fall off at the bottom of the rose bushes at times when the upper leaves are shading them. The lower rose leaves are not getting the sunlight they need to, so the rose leaves turn yellow and drop off.