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Money trees are often pruned into a tidy shape that looks like a small tree. They have a bare trunk topped by a canopy of branches and leaves. Sometimes, garden centers sell money trees with three ...
Rhytisma acerinum is a plant pathogen that commonly affects sycamores and maples in late summer and autumn, causing tar spot. Tar spot does not usually have an adverse effect on the trees' long-term health. [1] R. acerinum is an Ascomycete fungus that locally infects the leaves of trees and is a biotrophic parasite. [2]
Leaf spots can vary in size, shape, and color depending on the age and type of the cause or pathogen. Plants, shrubs and trees are weakened by the spots on the leaves as they reduce available foliar space for photosynthesis. Other forms of leaf spot diseases include leaf rust, downy mildew and blights. [4]
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Marcescence is most obvious in deciduous trees that retain leaves through the winter. Several trees normally have marcescent leaves such as oak (Quercus), [5] beech (Fagus) and hornbeam (Carpinus), or marcescent stipules as in some but not all species of willows . [6] All oak trees may display foliage marcescence, even species that are known to ...
It has thick, shiny, smooth leaves that grow in opposing pairs along the branches. Leaves are a rich jade green, although some may appear to be more of a yellow-green. Some varieties may develop a red tinge on the edges of leaves when exposed to high levels of sunlight. New stem growth is the same colour and texture as the leaves, becoming ...
It has a single main trunk that can reach a diameter of up to 6 centimeters. The branches are thickened and gray-green in color. Shoots with leaves have a diameter of 7 to 10 millimeters. Unlike the related Crassula ovata (more commonly-referred to as 'jade'), C. arborescens has rounded, red-edged, gray leaves shaped like "silver dollars" or ...