Tomato plant collapse

Asked September 9, 2017, 10:54 AM EDT

All was well with our plants until around Labor Day. Then wilted within 48 hours. Lots of rain this summer as you know. Last year Septoria hit but fruit yield was ok. This year, fruit has lots of stabbing. Suspect Anther (spelling?). All 72 plants grown from seed in our small greenhouse. 1 acre garden on our farm on Square Lake near Stillwater. Have pictures but can't figure out your e mail address. Appreciate your comments Don Josephson

Washington County Minnesota

6 Responses

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However, the sudden collapse of the tomato plants suggests they may have been affected by late blight. This devastating disease has been common in Minnesota this summer. Please compare your plants and their symptoms to those shown and discussed in the following website. Although tomato fruits damaged by late blight and anthracnose look similar, the former is more destructive and usually affects the entire plant. If late blight is present, precautions must be taken to reduce the chance of it occurring again next year.


thx for your prompt response. Hope I have figured out how to send the pictures.

as you indicate, it's been such a wet summer, I'm really not too surprised that this happened.

if we cut out bad spots on fruit, can we cook it down for sauce?

According to authorities at Michigan State University, it's OK to eat unblemished fruits taken from plants affected by late blight but not fruits that show blight damage.

Hi, Bob
we grew our plants from seed as we have done for several years. Had a good crop last year although we got some septoria problems towards harvest but fruit was ok. Planted this year in different location in our 1 acre garden. Then " boom" around Labor Day. Planted 70 some plants when about 6" tall. Lined rows with black plastic.
Gave some plants to two friends. Theirs have collapsed as well!!??
iwould we have contaminated seedling in our greenhouse. Any other observations?

See the last paragraph of the following current blog post to learn how late blight spreads. The blight probably did not originate with the seedlings.


youve nailed our problem! Thanks for all you're help! I should have started fungicide before the problem occurred. There's always next year.

Don Josephson
farm on Square Lake (Stillwater), Mn.