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Autumn leaf color is a phenomenon that affects the normally green leaves of many deciduous trees and shrubs by which they take on, during a few weeks in the autumn season, various shades of yellow, orange, red, purple, and brown. [ 1] The phenomenon is commonly called autumn colours[ 2] or autumn foliage[ 3] in British English and fall colors ...
Maclura pomifera, commonly known as the Osage orange ( / ˈoʊseɪdʒ / OH-sayj ), is a small deciduous tree or large shrub, native to the south-central United States. It typically grows about 8 to 15 metres (30–50 ft) tall. The distinctive fruit, a multiple fruit, is roughly spherical, bumpy, 8 to 15 centimetres (3–6 in) in diameter, and ...
An algal bloom or algae bloom is a rapid increase or accumulation in the population of algae in freshwater or marine water systems. It is often recognized by the discoloration in the water from the algae's pigments. [ 1] The term algae encompasses many types of aquatic photosynthetic organisms, both macroscopic multicellular organisms like ...
Photosynthesis ( / ˌfoʊtəˈsɪnθəsɪs / FOH-tə-SINTH-ə-sis) [ 1] is a system of biological processes by which photosynthetic organisms, such as most plants, algae, and cyanobacteria, convert light energy, typically from sunlight, into the chemical energy necessary to fuel their metabolism.
Cordyline australis, commonly known as the cabbage tree, [3] or by its Māori name of tī or tī kōuka, is a widely branched monocot tree endemic to New Zealand.. It grows up to 20 metres (66 feet) tall [4] with a stout trunk and sword-like leaves, which are clustered at the tips of the branches and can be up to 1 metre (3 feet 3 inches) long.
Lavender (Lavandula officinalis)Bushy with grey-green foliage and tall purple or white flower spikes, Lavender is an easy-to-grow plant that does best in a sunny spot with well-drained soil.
Chlorosis. In botany, chlorosis is a condition in which leaves produce insufficient chlorophyll. As chlorophyll is responsible for the green color of leaves, chlorotic leaves are pale, yellow, or yellow-white. The affected plant has little or no ability to manufacture carbohydrates through photosynthesis and may die unless the cause of its ...
The spots, which may be as much as 12 mm across, are generally circular and have an irregular edge often with a yellow halo. Leaves frequently turn yellow and fall early. Sometimes new leaves are produced, and these may also become affected. Continual defoliation will cause weakness, dieback or death of the plant. Some very susceptible species ...