Agapanthus , also commonly known as Nile Lily or LiIy of the Nile , is a species of flower repeated touch to the Amaryllis family . aboriginal to the southern portion of the African continent , agapanthus grow up from hush-hush rhizomes producing tall tensile greenish stalk . The strappy foliage is low growing and heap in a fountain - like variety . Agapanthus thrives in full Lord’s Day and does not brook Robert Lee Frost or freeze temperature . While it is broadly considered to be disease resistant , a few common problems let in some gadget characteristic of rhizomatic plants can crop up .

Botrytis Blight

Also known as hoary mould , Botrytis is a coarse fungal disease and can taint much of the agapanthus industrial plant , except the root system . Pale gray or silver spots and covering will develop on tissues during prolonged wet or humid conditions with little to no sun , but will be cold and easily airborne when teetotal . The septic plant tissues below the gray coating play scandalmongering , then brown and give-up the ghost . Tissue that has been killed and is brown can be dotted with the fungal spores that have turned black by the later summer or early fall . There is no cure and infect tissues should be removed and discarded and never composted which can chance spreading the pathogen .

Rhizome and Root Rot

due to the Fusarium , Rhizoctonia or Pythium fungus kingdom , rhizome and beginning putrefaction are land borne diseases that persist in the soil for several age . Underground agapanthus tissues can be infect and unseasoned plant are particularly susceptible to being killed . The bunkum manifest as spots of liquifying rot that expect they are weewee or oil inebriate , and sometimes accompanied by snowy mildew . The top foliage can be stunt in ontogenesis and droop and the low leave or stems can show house of a brown slimy waste in splotches as well . These fungi are most active in wet grime with piteous drainage and inadequate ambient aura menstruation . Plants can be strengthened to promote them to outgrow the hurt with appropriate irrigation and fertilizer , but there is no eradicating cure for the fungus .

Leaf Spot

Leaf spot is due to the Colletotrichum and Myrothecium fungi that are activated by wet that persists on the leaves . Leaf fleck can darken and pit agapanthus leaves with yellow-bellied , brown and even dark spots and pass around to kill the leaf in serious cases . The lesions part on the top side of foliage , but can sink in through the leaf with just a thin level of dead tissue paper remaining between the top and bottom of the leafage surfaces . The prevalence of leaf speckle can be negociate by keeping the leaves teetotal during lacrimation , planting in locations with morning sun , removing heavily infected industrial plant material and using resistant cultivars if you hold up in wet or humid climates . Spray fungicides can also be used to keep down an contagion and specify its damage but can not completely decimate the spores .

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