Q.Is This Epiphyllum New Growth Normal?
I rescued a neglected cactus from a secondhand shop. After nurturing it flowered well but the subsequent new growth looks unusual: very tall slender and stalky with spinelets like aerial roots. Is this usual?

Certified GKH Gardening Expert
This will indicate 3 things-
Humidity is too high, airflow is too low, and sunlight is too low.
Changing these three factors will improve the growth of the plant.
Here are some articles that will help:
https://www.gardeningknowhow.com/ornamental/cacti-succulents/epiphyllum/epiphyllum-plant-care.htm
https://www.gardeningknowhow.com/ornamental/cacti-succulents/epiphyllum