Answer: Beaucarnea recurvata or ponytail palm is sometimes bothered by scale insects and sometimes by mealy bugs and both can seem like a sticky white lint. You can try removing it with a damp cloth. If it recurs, try spraying with commercially formulated insecticidal soap per the label instructions. Another approach would be to use a horticultural oil spray, be sure to read and carefully follow all of the label instructions. Both are sold at garden centers.
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