[rubans]

> Maybe I’m paranoid, but I decided to rip up the plants and throw them away.

Now they can start growing in a landfill somewhere.

[mikro2nd]

Pretty unlikely. GP "thinks they were cucumbers". If the plant was already fruiting, there'd be no doubt, so we conclude that the plants were still quite young. No fruit, no seed. No hazard. They're just going to be compost.