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Identifying "Weeping Blank Serious": It's Night-Blooming Cereus

Match Found

You're describing Night-Blooming Cereus (likely Epiphyllum oxypetalum or Selenicereus grandiflorus). It blooms at night, needs lots of sun, has large leaves, and vine-like stems.

Resources

Confirm with photos; care is similar to other epiphytic cacti: bright light, well-draining soil, dry between waterings.

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