Welcome to the forum, sajaniclerk! If you put your location in your profile folks can give you some more specific, climate-aware advice.
I'm curious, did you purchase these as plants or grow from seed? If they're purchased plants are they Bonnie Plants seedlings?
I just shared this link with another new user with problems with Bonnie Plants cucumber plants. I wonder if Bonnie has an issue with a grower. The other user didn't have his location info available, either, but it would be interesting to know if ya'll are in the same general region/area.
I'm not saying yours is caused by this, I guess your's could be from some kind of bug damage or handling damage or it could be an earlier stage of this. Here's the link:
Fusarium root and stem rot. .
Best wishes,
Ed
