Q.Why Do I Get Tunnels or Fissures Inside My Cukes?
Sometimes when I slice cukes from my garden, there are holes that seem to run the length of the cucumber. I’ve never found a worm. What could be causing this?
Cathy
Answered on July 27, 2011
What your describing suggest your cukes are reacting to uneven watering. If the middle has not filled out the fruit is not fully matured as well. Normally insect damage of cucumbers don't appear as you described.
This article may be of some help to you:
https://www.gardeningknowhow.com/edible/vegetables/cucumber/deformed-cucumbers.htm
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