Why did a leaf rot and fall off my zebra haworthia (zebra plant)?

What's likely going on

From the photo, the leaf tip is brown, soft, and a bit mushy – classic rot on an individual leaf. On zebra haworthias (often called zebra plants), a single leaf can rot and detach for a few reasons:

• Normal aging – older, lower leaves naturally dry up or rot off as the plant makes new growth on top.
• A bit too much moisture around the base – water sitting in the rosette or soil staying damp too long can cause the lowest leaves to rot first.
• Physical damage – a leaf that was bent or cracked earlier may slowly rot from that point.

Because the rest of the plant looks healthy and it’s a succulent that’s only watered after the soil dries, this is most likely a one‑off leaf issue, not full root rot.

You’d mainly need to check the roots if you see multiple leaves turning soft at the base, a wobbly plant, or a bad smell from the soil.

What to do

1. Inspect the remaining leaves
   Gently squeeze them. They should feel firm, not squishy. A little wrinkling from thirst is okay; mushy is not.

2. Check the crown (center)
   Look down into the rosette. If the center leaves are green and tight, the plant is fine. Remove any other obviously dead or brown lower leaves by gently tugging.

3. Adjust watering
   Water only when the potting mix is dry at least halfway down. For a succulent like this, that can easily be 2–4 weeks, depending on pot size and climate.

4. Improve drainage if needed
   Make sure the pot has a drainage hole. The soil should be gritty and fast‑draining (cactus/succulent mix). If it stays wet for many days, consider repotting into a better mix.

5. Watch for warning signs
   Over the next few weeks, if you notice more leaves turning mushy at the base, then gently slide the plant out of the pot and check that the roots are firm and whitish, not brown and slimy.

How to prevent it

• Avoid letting water sit in the rosette; water the soil, not the leaves.
• Use a well‑draining succulent mix and a pot with drainage.
• Give it bright, indirect light so the plant grows compact and strong.
• In cooler seasons, water less often, as the soil takes longer to dry.

When to worry

• Several leaves in a row are turning soft or translucent, especially near the base.
• The whole plant feels loose in the soil, or the stem feels mushy.
• You notice a sour or rotten smell from the pot or see black, slimy roots when you peek inside.

If any of those happen, unpot, cut away rotten roots, let the plant dry for a day, then repot into fresh, dry succulent mix and resume very light, occasional watering once it’s settled.