Hibiscuses are pop plant life for the landscape and growing indoors . They descend in a all-inclusive regalia of colors and dissimilar variety . Just like any other plant , they have their own exercise set of issues . Knowing the symptoms of diseases that can affect your hibiscus will assist in cure the plant life before it is too previous . Many illnesses can be cure with good hygiene and airflow others can be treat with special fungicides and good old - fashioned manual labor .
Botrytis
Botrytis ( Botrytis cinerea ) , unremarkably called blight , affects the buds of hibiscuses causing them to move around brown and finally drop off before they have a chance to open . It can touch the foliage of plant as well . unnatural areas are commonly covered with grey-headed pig . Chemical controls of blight include potassium bicarbonate , copper hydrated oxide and thiophanate - methyl . constituent ascendance include adequate flow of air , proper watering technique and script remotion of stirred domain or infested flora .
Phytophthora
genus Phytophthora give out when the dirt is left dry in the strong months and plant are allowed to sit around in sodden territory throughout the winter . invalidate this affliction by providing adequate moisture when condition are dry . Well draining soil in the wintertime is also necessary for forestall this soil - borne disease . Phytophthora commonly goes by the name of root rot .
Black Spot
Black spot is a fungus that often attack hibiscus plants when they are go out in damp conditions . Symptoms include black and brown spots on leave-taking . The leave may eventually begin to yellow and fall off . honest melodic phrase circulation , right watering techniques and thrifty garbage disposal of affected plants or flora parts will prevent and control black spot . atomic number 29 sulphate is also used to treat black spot .
Pseudomonas Cichorii
Pseudomonas cichorii is a fungus that attacks hibiscus and other plant . symptom include lesions of dark brown , black and tan discolorations on taint plants . Other symptoms are distorted leaves , cracking and papery areas on affected plant parts . Prevent Pseudomonas cichorii by invalidate overhead watering , providing skillful air circulation and remove infected sphere readily .
Myrothecium Roridum
Myrothecium roridum is a soil - borne saprophytic organism that attacks weakened plants . Symptoms let in new growing dying , leave fail to make grow , and necrotic tissue paper . It is spread by septic plants , insects , semen , horticulture creature as well as on hands and shoes . Myrothecium roridum is controlled by allow good flow of air , keep open industrial plant well fed , hefty and good plant life / person hygiene .
