Jade Plant: Single Black Leaf – Normal or Problem?

One Black Leaf: Usually Not a Concern

A single bottom leaf turning gray-black on a young jade plant (Crassula ovata) is typically natural aging. Succulents shed older leaves as they grow. If multiple leaves blacken rapidly, then investigate.

Your Care Assessment

• Repotting: You moved it to a 4" terra cotta pot—good size, assuming it has a drainage hole. (If not, repot into one that does.)
• Light: 6–10 hours daily on a windowsill—excellent.
• Watering: Every 7–10 days. Better: Water only when top 1–2 inches of soil feel dry. Frequency varies with conditions.

Best Practices for Jade Plants

• Keep moderately pot-bound—don't upsize until soil dries in ≤3 days.
• Terra cotta is ideal (breathable).
• Bright light, including some direct sun.
• Water deeply, then wait for significant dry-down.
• Occasional leaf loss is normal.

Your plant should thrive with these adjustments. The single black leaf is likely just the plant's natural cycle.

For a jade plant care guide, email the author.