What could be reason for cereus blossom drop?

Question

Hello,
After not having any blooms for more than fifteen years, I discovered a blossom a few weeks ago. In the past the plant wintered in my dining room but was kept in my cool basement this past winter. The blossom was not actively growing, looked pale, then dropped yesterday. My zone is 07111, we had a lot of rain this month and I’m wondering if the excessive rainwater could have been the cause. Attaching current pics as well as the blooms from the past. Thanks

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Answer 1

Excessive water, along with cooler temperatures will have caused this. They will prefer temps into the 90's and above. They are very sensitive to overwatering as well. This article will help: https://www.gardeningknowhow.com/ornamental/cacti-succulents/night-blooming-cereus/night-blooming-cereus.htm