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Ovulinia petal blight is commonly referred to as Ovulinia flower blight, Azalea flower blight, and Azalea flower spot. [1] First reported in the 1930s on the Belgian-Indica hybrids, petal blight can attack most azaleas under favorable weather conditions. Infected flowers first exhibit small spots, about 1 mm in diameter, which appear water ...
While these plants are relatively low maintenance, it’s not unusual for peace lily leaves to turn yellow here and there due to stress, pests, or other issues. This guide explains the most common ...
Azalea leafy gall can be particularly destructive to azalea leaves during the early spring. Hand picking infected leaves is the recommended method of control. [4] They can also be subject to Phytophthora root rot in moist, hot conditions. [5] Azaleas share the economically important disease Phytophthora cinnamomi with more than 3000 other plants.
North American azaleas are commonly confused with azaleas of Asian origin, the evergreen azaleas. North American azaleas are deciduous and produce two types of buds. One is a larger and produces about 20 flowers while the other bud produces a leafy shoot. [1] The flower color, fragrance, and number of stamens vary among species.
Sometimes it helps to give the plant's pot a quarter-turn every week or so to straighten out its growth, but the better option is to increase light exposure. 5. Losing Variegation or Fenestration
In the fields of horticulture and botany, the term deciduous (/ d ɪ ˈ s ɪ dʒ u. ə s /) [1] [2] means "falling off at maturity" [3] and "tending to fall off", [4] in reference to trees and shrubs that seasonally shed leaves, usually in the autumn; to the shedding of petals, after flowering; and to the shedding of ripe fruit.
Annual autumn leaf drop in temperate zones is caused by the abscission of the mature leaves from the growth season in response to the approach of cold winter weather. Abscission (from Latin ab- 'away' and scindere 'to cut') is the shedding of various parts of an organism , such as a plant dropping a leaf , fruit , flower , or seed .
Leaf and flower gall Exobasidium vaccinii = Exobasidium azaleae. Ovulinia petal blight Ovulinia azaleae Ovulitis azaleae [anamorph] Pestalotia leaf spot twig blight, and crown rot Pestalotiopsis sydowiana = Pestalotia rhododendri. Phomopsis dieback Phomopsis spp. Phyllosticta leaf spot Phyllosticta spp. Phytophthora blight and dieback