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Fasciation (pronounced / ˌ f æ ʃ i ˈ eɪ ʃ ə n /, from the Latin root meaning "band" or "stripe"), also known as cresting, is a relatively rare condition of abnormal growth in vascular plants in which the apical meristem (growing tip), which normally is concentrated around a single point and produces approximately cylindrical tissue ...
Cola-nut galls (Andricus lignicola) on pedunculate oak, caused by a cynipid gall wasp. Galls (from the Latin galla, 'oak-apple') or cecidia (from the Greek kēkidion, anything gushing out) are a kind of swelling growth on the external tissues of plants. Plant galls are abnormal outgrowths [1] of plant tissues, similar to benign tumors or warts in
Symptoms will often appear overnight, affecting many types of plants. Leaves and stems may turn black, and buds and flowers may be discoloured, and frosted blooms may not produce fruit. Many annual plants, or plants grown in frost free areas, can suffer from damage when the air temperature drops below 40 degrees Fahrenheit (4 degrees Celsius).
Environmental abiotic factors like hot weather or water stress that result in an imbalance in plant hormones during flowering can cause phyllody. These can usually be differentiated from phyllody caused by biotic factors by the simultaneous presence of healthy and abnormal flowers. When conditions normalize, the plants resume normal flowering.
In severely affected plants the growths can also appear on the stems and cause leaves to turn yellow and drop off, [4] leaves can also become distorted. [5] If the conditions causing edema are prolonged then the plant can become spindly and have stunted growth. [4] Edema can often be confused with a variety of other plant conditions, such as ...
Virescence is the abnormal development of green pigmentation in plant parts that are not normally green, like shoots or flowers (in which case it is known as floral virescence). [1] Virescence is closely associated with phyllody (the abnormal development of flower parts into leaves ) and witch's broom (the abnormal growth of a dense mass of ...
Related: A Guide to Pruning Plants for Healthier Trees, Shrubs, and Flowers. 8. Choose Resistant Plants. Growing plants that are naturally less appealing to thrips can make your garden easier to keep.
Attacks by fungi, bacteria, and nematodes can cause rapid killing of plants, large tree branches or even entire trees. A pine tree with pine wilt Wilt diseases in woody plants tend to fall into two major categories, those that start with the branches and those that start with the roots.