Bumps on tomato plant stems, dying plants
There are little bumps on the lower stems of my tomato plants, and the plants are shriveling up and falling over. I asked someone at a garden center and was told its something like transplant shock, but i don't think it is. The problem is on one end of the garden and spreading, but the plants on the other end are perfectly healthy, without any bumps on the stems.
These were started from seed and planted a few weeks ago. Since they were put in the ground, they doubled or tripled in size and seemed very happy, but now they're dying.
Help diagnosing the problem would be very much appreciated.
I took 2 pictures - if you zoom in on the stem you should be able to see the bumps.