What is this ……..?

Question

I have very nice vine on my fence that produces very light blue tulip like flowers, have had it for close to 8 years, blooms twice a year sometimes. This year, for the first time, it produced a single large green prickly like pear. Can you identify it ?
I live in Port St Lucie Florida.
Sincerely,……………..John

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Answer 1

I could not identify the vine from your information.
It would appear your vine has produced a seed pod.