What Might Cause The Pups On The Top Of A Yucca To Die Suddenly?

Question

The yucca is in a conservatory and was doing well, but after watering from the bottom (not too much water) the leaves on the three large pups on the main stem died off within 2 weeks. They had been growing with an irregular shape (narrow, especially at the base) for some time.

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Answer 1

Pups usually grow from the base of the yucca, so I suspect they weren't getting enough moisture. Here are the cultural needs of yucca plants:

https://www.gardeningknowhow.com/ornamental/foliage/yucca/growing-yucca-indoors.htm
https://www.gardeningknowhow.com/ornamental/foliage/yucca/separating-and-repotting-yucca-offshoot-pups.htm
https://www.gardeningknowhow.com/ornamental/foliage/yucca/soil-for-yucca-plants.htm