Butternut Squash Plants
Q.

butternut squash

Zone northhamptonshire england | janconway added on August 20, 2016 | Answered

The skin of some of my butternut squashes has turned brown, in ring patterns. The fruits are still very firm. What has caused this, and what should I do in future to stop it, please?

A.
A.Answers to this queston: Add Answer
Alisma
Certified GKH Gardening Expert
Answered on August 21, 2016

This could be black rot, also known as gummy stem blight. This disease affects both the fruit and stems/leaves Anthracnose is another possibility. Both are common diseases in some regions.

See these articles for more information:

http://vegetablemdonline.ppath.cornell.edu/factsheets/Cucurbit_FrtRots.htm

https://www.gardeningknowhow.com/edible/vegetables/squash/squash-pumpkin-rot-disease.htm

https://ag.umass.edu/fact-sheets/cucurbits-black-rot

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