Members of the hibiscus family , mallow are grandiloquent , scrub - type industrial plant that produce smart , colorful blossom all summertime . According to the University of Arkansas Cooperative Extension Service , mallow plants spring up well in full sun , with a healthy watering during wry spells . These plant are , however , susceptible to their share of disease .

Bacterial Leaf Spot

Bacterial leaf patch , scientifically known as Pseudomonas cichorii , is a bacterial disease that dissemble the leaves of mallow plant . Around 120 different types of bacterium can instigate this disease , and it is almost impossible , to determine which organism is at fault . The signs of this disease are light and disconsolate catching and black or brown lesions on the upper sides of the leaf . Spots can alter in size and may be surrounded with round pack . The spots may band together to form enlarge splotch if the disease drop dead untreated . The leave-taking may rick icteric and defoliation can go on . forestall this disease by keep your mallow ’s foliage dry . Always water at the base of the plant , never from budget items . When implant , leave space between your mallow plants to allow for breeze circulation . Overcrowding creates the perfect environment for disease .

Gray Mold

This disease , scientifically named Botrytis cinerea , is vulgar to herbaceous plants like mallow . cause by a nonspecific host , this disease thrives on wet plant . Under high humidness and cool weather condition , gray mold can take hold on your plant in as small as 20 hour . According to the University of Illinois annex , grey-haired mold can affect both the foliage and bud of mallow plants . If you notice chocolate-brown area or lesion acquire on the midriff of the works ’s petals , Botrytis cinerea is the probable culprit . Once infestation occurs , this disease is hard to treat and can finally result to imbed death . Preventative criterion are best with this disease . Prune any affected parting and bud from the mallow , and remove any septic debris from the base of the plant .

Phytophthora Blight

Phytophthora blight , a fungous disease , is typically make when the soil becomes waterlogged , or impregnate so soundly that it can not debilitate in a sensible amount of fourth dimension . Overwatering is the main causal agency of Phytophthora blight in waterlogged situations . This disease affects the vascular arrangement of mallow and causes wilting of the blooms and foliage . Prevent Phytophthora blight by not overwatering your plant . If your mallow is plant in a location that is prostrate to runoff , deliberate installing a drainage ditch .

References

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