Most likely cause
Overwatering is the top cause of a Jade dropping leaves. As a succulent, Jade stores water in its thick leaves and is built for drought, so consistently wet soil suffocates the roots and they rot. Once the roots fail, the plant cannot support its leaves and they yellow, go soft, and drop, often from the lower stem upward.
You can confirm it by the pattern. The fallen leaves feel soft and mushy rather than crispy, remaining leaves may look yellow or translucent, and the soil has stayed wet for days. If the pot has no drainage or sits in a saucer, this is almost certainly the driver. Stop watering and let the soil dry out completely; if the stem base is soft, unpot the plant, trim rotted roots, and replant in dry, gritty mix.
Other causes
These rank below overwatering but often overlap, especially in winter.
- Underwatering. Leaves wrinkle and shrivel before dropping, falling from the bottom up while the soil is bone dry.
- Sudden shock. A move to a new spot, a repot, or a sharp temperature change triggers a quick burst of leaf drop within days.
- Too little light. Growth turns weak and leggy with widely spaced leaves that loosen and drop, and the plant leans toward the window.
- Cold drafts. Exposure to temperatures below 50F or a chilly windowsill makes leaves soften and fall.
How to fix it
- Check a fallen leaf. Soft and mushy means overwatering; shriveled and dry means thirst or shock. This sets your first move.
- Stop watering. Let the soil dry out completely, then water only when it is bone dry several inches down.
- Inspect the roots. If the stem base is soft, unpot the plant, cut away brown mushy roots, let it callus a day, and replant in cactus mix.
- Use the right soil and pot. Plant in gritty cactus mix in a pot with drainage holes, and never let it sit in standing water.
- Give bright light. Move it to a bright window with several hours of direct sun so growth stays compact and firm.
- Avoid shocks. Keep it in one stable spot, repot only in spring or summer, and protect it from cold drafts below 50F.
- Be patient. After fixing the cause, allow several weeks for new growth to appear from the nodes and stem tips.
| Cause | Tell-tale sign | Fix |
|---|---|---|
| Overwatering | Soft, mushy, yellowing leaves, wet soil | Dry out, trim rot, repot in gritty mix |
| Underwatering | Wrinkled, shriveled leaves, dry soil | Water thoroughly when bone dry |
| Sudden shock | Burst of drop after move or repot | Stabilize spot, hold watering a week |
| Too little light | Leggy growth, wide leaf spacing | Move to bright direct light |
| Cold drafts | Leaves soften after a chill | Keep above 50F, away from windows |