How to tell
Overwatering. Leaves yellow and then drop, and the soil stays wet, often alongside yellowing stalks.
A recent change or shock. It started dropping leaves soon after you bought, moved, or repotted it, or when the seasons turned.
Underwatering. Leaves crisp, curl, and drop, and the soil is bone dry alongside wrinkled stalks.
Cold drafts or temperature swings. It’s near a frequently-opened door, a cold window, or a heat source, and drops leaves in cold snaps.
Too little light. It quietly drops its lower and inner leaves over time while reaching toward the window. Check it’s actually getting its low light tolerant range.
