In article 9c9900f6-d4de-47ed-b590-6530d4505eb8
@i76g2000hsf.googlegroups.com, says...

I'm replying to this post with my tomato problem since I'm getting an
error message trying to post a new message!

Two of my tomato plants suddenly went into total wilt. I've never seen
this type of wilting problem. Last year in a different spot I had some
wilting disease that started at the bottom of the plant and they
responded a bit to extra watering, for a while, before they expired.
These tomatoes are wilted top to bottom, no leaf discoloring. I'd
appreciate any help identifying this problem and either a cure or
future prevention. This is only the second year of planting tomatoes
in this area and so far the other plants near these two affected ones
are doing fine.
I'm getting a lot of strange things going on in the garden this year -
plants that don't look healthy, black spotting on a brand new,
expensive hydrangea and almost overnight major increase in black
spotting on all my roses, other perennials that just don't look right
etc.
I'm an organic gardener, so any help in that direction would be most
appreciated.

With regards to the tomatoes, that sounds like an insect or insect borne
disease. My wife, who walked in and out of the room just now said
"...probably insect, just for the speed of it." and, "What does total
wilt look like?"

Rodale's Color Handbook of Garden Insects lists potato stalk borer,
potato tuberworm, cutworms and crickets as affecting stems and branches
(and by implication, the whole system depending on where they are in or
on the plant.)

The rest seems environmental.

Where are you?

What kind of rains are you getting?

How overcast has it been?

What temperatures have you been getting? What kind of humidity?

How much air can get in around the affected plants?

How much air can you get in around the affected plants?

And responding to your comment about strange things.

I think we're past the point where we can expect things to behave
normally. --I've been observing particularly heavy fruit and seedset on
trees and weeds these past few years, as if the plant kingdom knows
something we don't.