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Yucca's Natural White Film: Not Powdery Mildew

The even, dusty white coating on your Yucca leaves is a natural protective film (epicuticular wax) that helps the plant survive drought. Powdery mildew looks fuzzy, patchy, and leaves brown spots underneath.

What to Do

Leave it—it’s beneficial.
If unsightly, wipe gently with soapy water on a sponge.
Never use Lysol or household cleaners on plants.

Your Yucca is healthy. No treatment needed.

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