The holy man trumpet plant is a relatively hardy works and is not susceptible to many disease , but might be involve by sure disease and pest if the plant is not healthy to begin with . To help forbid diseases and pests , make indisputable the plant is properly cared for , and environmental effect , such as iron greensickness , tan , hotness focus , air pollution and hydrops are not effecting the plant . If you do observe any of the number problems with the holy man trumpet , net the disease and remove the offending environmental problem .
Leaf Spot
Leaf spot shows itself as various sized spots on the foliage of the plant . The color may also vary . The leafage spot are usually dark-brown but may be black or tangent . The spots may combine over time , yield the leaves a blotchy look . Keeping trimmed or fallen works rubble cleaned up helps foreclose leaf spot . If the angel trumpet is prone to leaf spots , weewee from below rather than from above . leafage spot may be slay by discarding the affect leaves .
Aphids
aphid are small , pear - shaped insects . They suck plant juices from the stem and leaf of the plant . An saint trumpet with aphid has pale or sometimes yellow spots on the leaf and stems . finally , the leaves turn chocolate-brown , and might curl or become stunted . The aphid are normally found on the bottom of the leaves . Spraying with water every other morn knocks the aphids off the plants . If using water does not remove the infestation , care for the plant with an insect powder , or introduce lacewings and ladybird to the angel trump plants . Lacewings and ladybug feed on aphids and are not harmful to the saint trumpet flora .
Whiteflies
Whiteflies are generally found on the underside of the leaves of house plants and out-of-door works . They pierce the plant and suck its juice . Usually , whitefly are just a nuisance , but they may become a threat if the infestation becomes too large . Whiteflies have lily-white , powdery wing , and when disturbed , the adult fly off in a cloud of whitened .
Whitefly traps may be used to curb whiteflies . Homemade whitefly traps can be made from using a sticky trap by cake cardboard with petroleum jelly or heavy level motor oil colour . cling the traps vertically near the plants . Discard and exchange the traps as necessary . you may also attempt using insecticide , but some whiteflies have develop resistance to many of the over - the - riposte insecticides usable .