Hi Margaret,

Cool, wet weather can spread bacterial or fungal blights on geraniums. However, if any of these were affecting your geraniums, we would expect to see brown spots on the leaves and petals would typically turn brown, not white. In fact, diseases in geraniums typically affect leaves or stems. You say the leaves look healthy and they look healthy in the pictures you sent, so this does not indicate a bacterial or fungal blight.

If you want to be sure, you can take a cutting of the affected blossoms to a local extension agency that offers diagnostic services (double check since some services are restricted due to Covid).

In geraniums, it is normal for some of the flower buds in the cluster to die before others. How many days is the full cluster in bloom before some of the flowers start dying?

You can pinch off the spent blooms to maintain a nicer appearance and give more room for budding flowers.

You mention they are adequately watered, and if they were lacking in water you would see symptoms in yellowing bottom leaves. On the other hand, geraniums don’t prefer sitting in consistently wet soil, so you could try reducing water and only water when the top layer of soil is starting to dry out.

On 06/12/2021 1:21 PM Ask Extension <<personal data hidden>> wrote: