Pink Velour Crape Myrtle Mildew?

Asked August 28, 2020, 3:46 PM EDT

Hi...planted in zip code 21044 in April of 2018, our pretty Pink Velour had a lot of this white, fuzzy stuff after bloom last Fall. I treated with Spectracide Immunox Multi-Purpose Fungicide as directed. All looked good this Spring, etc., and the blooms were gorgeous. Just looked an saw the white fuzzy stuff on the “berries” again. Hopefully, you will be able to zoom in and spot them on the pics attached. an you help with what to do and when? Thank you very much!

Howard County Maryland

6 Responses

This is powdery mildew, a common fungal disease which is bad this year because of weather conditions. https://extension.umd.edu/hgic/topics/powdery-mildew-trees-and-shrubs

Yours is not one of the most disease-resistant crape myrtles, however. If you have problems every year, you may want to replace it with a more disease-resistant variety. (There is a link to some above.)

Ellen

Thank you, Ellen...would you think the Spectracide Immunox Multi-Purpose Fungicide mentioned in my question would be appropriate to use? If not, can you suggest a treatment?

The label on that product does list powdery mildew (as a disease controlled) and crepemyrtle (as a treatable plant) so yes, it should be fine to use as per label instructions regarding dilution (if needed) and re-application frequency. Your infection looks minor in the photo, but weather conditions can influence how widely it spreads. The later we get into autumn, the less any persisting mildew will need treating as it is not going to cause any measurable damage to the crepemyrtle, which will be soon shedding foliage and going dormant.

The "berries" are the unopened flower buds (if smooth-surfaced) or spent flowers and developing seeds (if cracked, split, or otherwise not a smooth surface) within the flower cluster. Mildew on the latter is of no great importance and when enough of the buds are spent on that cluster, the entire cluster can be trimmed away instead of spraying.

Miri

Thank you so much! Fingers crossed...such a pretty bloom with the yellow eye ensconced in the raspberry colored blooms!

Thank you so much! Fingers crossed...such a pretty bloom with the yellow eye ensconced in the raspberry colored blooms!