I have a bunch of string beans that were up a couple of weeks ago, and they
are suddenly looking like they froze. It got down into the low thirties,
but nothing else froze, including the tomatoes and peppers. Many of the
leaves are turning brown to blackish, and curling up or going limp.

Do I have some kind of a blight? If so, what can I do about it now, and how
can I avoid it later?

If it's not a blight, what might it be and what do I do?

Thank you in advance.

Lightnin Dave

It sure reads like frostbite. Beans are tender, more so than tomatoes. Bean
blights, Common or Halo. usually appear
When the pods are forming and black spots on the pods and yellowing leaves are
the major symptoms. Rhizoctonia root rot takes out some bean plants for me on
occasion. It strikes young plants which just curl up and die. If you pull a
plant you will find rotted places in the main stem just below ground level.