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Calophoma clematidina is a fungal plant pathogen and the most common cause of the disease clematis wilt affecting large-flowered varieties of Clematis.Symptoms of infection include leaf spotting, wilting of leaves, stems or the whole plant and internal blackening of the stem, often at soil level.
Sun damage — also known as photoaging — is responsible for 90% of visible changes to the skin. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 more ...
Photodermatitis, sometimes referred to as sun poisoning or photoallergy, is a form of allergic contact dermatitis in which the allergen must be activated by light to sensitize the allergic response, and to cause a rash or other systemic effects on subsequent exposure.
It grows on the edges of the woods, moist slopes, fence rows, in thickets and on streambanks. It grows in full sun to light full shade and is very adaptable to many soils from sandy to clay, dry to draining wet, and acid to alkaline with a pH range of 6.0 to 8.5. It has a deep but sparse, fibrous root system that makes it hard to transplant.
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Prior to the introduction of 'Jackmanii', the disease clematis wilt was little known and not widespread. [6] However, because 'Jackmanii' was bred from C. lanuginosa (a species which is susceptible to the pathogen which causes the disease), and because 'Jackmanii' led to a series of similar hybrids and the popularisation of the genus, clematis wilt soon became a serious problem for the new ...
Over 70 species and cultivars of clematis currently (2016) [1] possess the Royal Horticultural Society's Award of Garden Merit, reflecting this plant's continued popularity in gardens in the United Kingdom. Clematis is a genus of woody based perennials, mostly climbers with a twining habit, though some are grown as groundcover or as herbaceous ...
Shade avoidance is a set of responses that plants display when they are subjected to the shade of another plant. It often includes elongation , altered flowering time, increased apical dominance and altered partitioning of resources.