White stuff on the snap bean leaves

[Charles Packer]

My wife would like to know what ails her snap beans. The tops of the leaves look like some graffiti artist cleaned out the nozzle of his white spray can in the vicinity.

her row of seven pots. a close-up of a couple of the worst-affected leaves.

I tried to do a Web search on this, but wasn't able even to begin zeroing in on anything relevant.

-- Charles Packer

[The Cook]

My first guess is spider mites. Look for tiny insects on the back of the leaves.

[Pat Kiewicz]

Looks like spider mite damage to me, too.

Been hot and dry where you are?