genus Gerbera plants are member of the sunflower family that are grow as annuals in the northerly part of the United States ( US ) and perennial in the southerly part . Gerberas bear daisy - case prime in shades of pink , blood-red , orangish , ointment and yellow-bellied . The leaves are long , lobed and clumped together . genus Gerbera daisies are ordinarily used in mixed peak bed and butterfly stroke gardens . The gerbera is susceptible to several diseases .

Powdery Mildew

Powdery mildew ( Erysiphe cichoraceaum ) is the most coarse gerbera disease . This fungal disease is prevalent during long periods of high humidness , moderate temperature and turbid weather . This disease first causes small blotches of a powdery , bloodless substance to appear on the flowers and lower leaves . Some gerbera industrial plant educate a brown , scab - like wound . Powdery mildew progresses quick , and the affected gerbera plants dry out up and die . Powdery mildew pathogens diffuse to other gerberas through zephyr currents .

Botrytis Blight

Botrytis blight , also known as gray mould , is do by a mold fungus ( Botrytis cinerea ) . Botryitis transmission typically round genus Gerbera plants during drawn-out periods of rainy , nerveless atmospheric condition . Affected plants modernize a gray , fuzzy growth that hold masses of fungal spores . This blight can recrudesce on any part of the genus Gerbera plant except for the root system . The fungus overwinters in dead plant tissue and then disseminate to survive plants by melody currents .

Black Root Rot

Black root bunkum ( Thielaviopsis basicola ) is a fungous disease that damage the genus Gerbera plant ’s antecedent system . Above - ground signs of fatal ascendent putrefaction include yellowing of the newer growth and wilting leaves . Some moved plants develop black stem wound at the land line . The morbid root appear black , gray or off - ashen , according to the harshness and eld of the disease . The ignominious ascendant bunk pathogen are soil - born and can survive for old age in tiny spore called chlamydospores .

Disease Prevention

Most genus Gerbera diseases can be avoided by right plant care . These flora need well - drained soil and should be watered only when the top ground is teetotal to the speck . Overhead lacrimation methods should n’t be used because they can cause excess wet . Gerberas should be planted 12 to 18 inches aside to allow for correct line breathing . The peak should be just above the soil argumentation . pot medium should be disinfected to rid of any infectious being .

Disease Control

Infected gerbera daisies should be removed from the vicinity of other plants . Blighted or pass blossoms , blight leave of absence and other septic flora parts should be burn or placed in a plastic bag . Infected plant life should never be used on a compost spate . antifungal sprays might help assure gerbera diseases triggered by fungal spore when apply in the former degree . When fungicides are apply as foiliar sprayer , the leafage suck up the chemicals and moves it down into the rootage .

References

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