Like any other plant, the yucca "palm" - which is actually not a palm tree at all, but an agave plant - can get sick. Brown leaves indicate various care mistakes, whereby the discoloration is usually due to too much moisture.
The yucca palm usually turns brown from the tips of the leaves
The most common causes of brown leaves
The leaves of the yucca usually dry up from the tips of the leaves until the whole leaf looks brown and dried up. Don't make the mistake of cutting off the brown tips of the leaves, not only does it look very strange, but it's actually useless. The interface will dry up again and turn brown. It is better to live with the brown leaf tips or to cut off the affected leaves completely. Completely dried leaves can also be easily plucked off.
Lack of water / too much water
No matter whether outside or inside: If the yucca has brown leaves, this is almost always due to an excess of water. The plants should only be watered moderately and need good drainage so that excess water or (in the case of plants planted out) rainwater can drain away quickly. If the plant is permanently too damp, the roots will rot. If the stem and shoots finally become soft, the plant can usually no longer be saved - only cut shoots that are still healthy can be planted as cuttings.
over-fertilization
Over-fertilization can also cause the leaves to turn brown. Fertilize the plant moderately and only during the growing season between March and September - the yucca needs a rest period in winter. Palm lilies in the garden such as Yucca filamentosa or Yucca gloriosa do not need to be fertilized at all, they take care of themselves.
tips
If the indoor yucca gets brown leaves during the winter months, this could also be due to a lack of light and/or the dry heating air.