Curly Leaves on Palm

Question

One leaf of the palm has started to curl wildly – any reason for this?

Answer 1

That is probably caused by scale insects. They are very hard to spot on the plant and will look almost like specks of dirt or fuzz on the underside of the leaves. Here is more information on how to treat it:
https://www.gardeningknowhow.com/plant-problems/pests/scale-bug-how-to-control-plant-scale.htm
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm