Mango tree has white specks on leaf undersides

theo247(7b NC)April 3, 2013

Hi folks,

I have my pickering mango indoors for the winter and recently noticed white specks on the leaf undersides (see pic). The specks wipe off easily and are definitely not insects. I've had about 5 leaves drop over the last month (not a lot but still concerning), and I wonder if it's related. I previously had some spider mite issues and sprayed with a mild neem oil solution, but I'm pretty sure that the spider mites are gone now.

Do you know if these specks are a problem? Thanks!

Thank you for reporting this comment. Undo

Yuck! Don't know what it is, but spray with Neem Oil immediately.

    Bookmark   April 8, 2013 at 9:52PM
Thank you for reporting this comment. Undo

The disease seems to be Powdery mildew. It is caused by the Oidium fungus. It appears when there are prolonged periods of cool, dry temperatures. The symptoms of the disease can be identified with the appearance of a white, powdery-like substance on the panicles, new fruit and the undersides of new leaves. This disease can cause premature leaf and fruit drop. Mature leaves that are infected have spots that appear a purplish-brown color. This occurs as the white fungus begins to disappear.

The treatment for this fungus is a fungicide program that begins in early spring and extends to the end of the crop season.

    Bookmark   April 11, 2013 at 10:01PM
Thank you for reporting this comment. Undo
theo247(7b NC)

Thanks for the replies! Powdery mildew makes sense, so I'll try using neem oil consistently (maybe with sodium bicarbonate, too, since I saw that suggested elsewhere).

    Bookmark   April 11, 2013 at 11:13PM
Thank you for reporting this comment. Undo
theo247(7b NC)

Just wanted to show an updated image of my mango. It's been looking much healthier in recent weeks, and it just exploded in new growth!

    Bookmark   April 27, 2013 at 9:16AM
Sign Up to comment
More Discussions
It may be too late, but what it happening to my Avocado tree?
So my little tree is about ten months old. The whole...
Soursop - seedling or grafted?
For those of you who have tasted soursop, I wanted...
Desert Rose leaf tips dying
I've had this desert rose (my favourite plant) for...
Coffee plants
Just took a close look at the two coffee trees in the...
Albuca spiralis seeds
Hello! Does anyone know from where can I get Albuca...
Sponsored Products
Lilac Tree Trunk Tiffany Style Table Lamp
Lamps Plus
David Trubridge Design | Nikau Half Pendant - Stained
Grass Bundle DĚ©cor
$9.99 | zulily
Jane Seymour White & Green Roses 11H in. Silk Flower Arrangement - JSB219-WHGR
$150.00 | Hayneedle
M I Hummel Sunshower Ornament
Malibu Path & Landscape Lights Low Voltage 20 Watt (Bi-Pin) Black Flood Light
$11.97 | Home Depot
© 2015 Houzz Inc. Houzz® The new way to design your home™