Powdery mould is a common fungal disease that affects hydrangeas . It appear as a white , powdery coating on the leaves and stems of the flora . If leave untreated , it can run to leaf drop and weaken the overall health of the hydrangea . Fortunately , there are several handling choice available to combat this fungus .

1 . Prune and thin out the works : Start by pruning any infected leaves or stems from the hydrangea . This will assist concentrate the spreading of the fungus and amend air circulation around the flora . to boot , thinning out the branches can also help increase air flow and sunlight insight , which are crucial in prevent powdery mold .

2 . Increase sunshine exposure : Powdery mildew flourish in shady , humid consideration . To help prevent and handle the fungus , consider moving the hydrangea to a gay location if potential . Increased sunshine exposure can help dry out out the leaves and inhibit the development of powdery mold .

3 . Improve melodic line circulation : Good zephyr circulation is crucial in prevent and do by powdery mildew . Make certain there is enough space between hydrangea plantings to allow for adequate airflow . Avoid overcrowding flora , especially in humid areas . This can be reach by slenderize out limb and removing any obtuse foliation .

4 . Remove works debris : Powdery mildew can overwinter on fallen leaves and other flora debris . To prevent re - infection , on a regular basis clean up and remove any fallen folio or other plant cloth around the hydrangea . This will help eliminate potential source of powdery mildew spore .

5 . Apply antifungal : If the powdery mildew transmission is severe or recurring , you may need to expend antimycotic to verify the fungus . There are several antimycotic agent available specifically for powdery mold , and it ’s crucial to follow the teaching on the label carefully . Some common antifungal for powdery mildew include sulfur - based product , neem fossil oil , and potassium hydrogen carbonate . give the fungicide consort to the commend program charge per unit and frequency .

6 . apply constitutive choice : If you prefer to use organic methods , there are several alternatives that can help control powdery mildew . These include bake soda solutions , milk spray , and garlic crude . These organic treatment are less strong than chemical fungicides but can still be effective if used consistently and applied exhaustively .

It ’s of import to note that prevention is key in managing powdery mildew on hydrangeas . on a regular basis monitor your plant , providing good cultural praxis , and keep industrial plant health can go a long agency in forbid powdery mould from taking hold . If you mark any signs of infection , it ’s practiced to start discussion ahead of time to prevent the spreadhead of the fungus and denigrate damage to the hydrangea .

Caroline Bates