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Gardeners grow hibiscus for the tropical flair they lend to the garden. They act as magnets to nearby hummingbirds and butterflies with their big, graceful flowers. While some hibiscus species do hail from the tropics, others, such as the rose mallows, are native to the United States. When a plant grown specifically for its ornamental nature shows signs of disease, it can be distressing to the gardener. Blight disfigures the hibiscus, but if you act quickly, there are ways to stop the disease.
The silver birch tree (Betula pendula) is also known as white birch, and it is native to the European continent. Silver birch is a quick-growing, deciduous tree that can reach heights of 65 feet. Betula pendula is grown for its attractive, non-peeling bark, which is white and turns black over time, its flowers, which appear in April and May, and its reputation for attracting wildlife. If you are fortunate enough to have silver birch trees in your lawn or garden, beware of some of the most common problems associated with the species.
The Pacific sunset maple (Acer truncatum x A. platanoides "Warrenred") is a hybrid of the Norway maple and the purpleblow maple. This hardy tree is desirable for its fast growth, colorful fall foliage and neatly rounded crown. Like all maples, it can suffer from a number of diseases, most of which are not life threatening.
Doublefile viburnum (Viburnum plicatum var. tomentosum) is a cultivar of the Japanese snowball viburnum (V. plicatum). This cultivar is one of the most beautiful variations of viburnum currently in circulation, according to the Clemson University Extension. Doublefile viburnum is vulnerable to several groups of diseases that can mar its aesthetic value and decrease its vibrancy. Some of these conditions are serious enough to cause permanent or fatal damage.
The tenderest parts of a mature plant are in the new growth and buds. These areas are still developing and, like a new plant, do not feature all the defense mechanisms of the rest of the plant, such as a hardened stem or thickened cell wall. Because of this, environmental factors and pathogens can weaken and even destroy new bud growth, leaving the still developing bud to rot on the branch.
Disease-causing organisms like viruses, bacteria, fungi and parasites are the leading cause of death worldwide according to MedlinePlus. These organisms---called pathogens---can tear down cell structures and weaken the body's ability to function normally. Pathogens come in different forms and strengths. though the condition of the host body plays a role in how virulent a particular pathogen can be.
Fungi that effect timber are made up of microscopic strands that grow together to produce a mass. When timber is moist, fungi can cause a great deal of damage. Monitoring moisture is the best way to prevent fungi from attacking and decaying timber.
Infection of the bone (osteomyelitis) is a serious infection, but it can be successfully treated in current medical practice. In the recent past, a bone infection would likely have lead to certain amputation of the infected bone.
