Troubleshooting
Crassula Alstonii problems — and how to fix them
Crassula Alstonii (Crassula alstonii) is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Rot from overwatering
The leading killer of this species. Wet or organic-heavy soil rots the dense column from the base. Use a mostly mineral mix, water only when bone dry, and water at the base, not over the leaves.
Loss of compact form
Insufficient light makes the tightly stacked leaves loosen and elongate, spoiling the ball shape. Move it to the brightest spot, with direct sun, to keep the column dense.
Scorched leaf surfaces
Sudden exposure to fierce summer sun can burn the soft, powdery leaves. Increase direct light gradually after winter so the plant can harden off.
Mealybugs
Cottony mealybugs and root mealybugs hide in the packed leaves and root ball. Treat early with rubbing alcohol or insecticidal soap and inspect the roots at repotting, as they are easily missed.
Prevent crassula alstonii problems before they start
Most crassula alstonii issues are care-mismatch, not bad luck. Dial in the basics:
Looking for crassula alstonii in general rather than its problems? Read the full crassula alstonii care guide — light, water, soil and feeding.
Crassula Alstonii problems — FAQ
Why is my crassula alstonii rot from overwatering?
The leading killer of this species. Wet or organic-heavy soil rots the dense column from the base. Use a mostly mineral mix, water only when bone dry, and water at the base, not over the leaves.
Why is my crassula alstonii loss of compact form?
Insufficient light makes the tightly stacked leaves loosen and elongate, spoiling the ball shape. Move it to the brightest spot, with direct sun, to keep the column dense.
Why is my crassula alstonii scorched leaf surfaces?
Sudden exposure to fierce summer sun can burn the soft, powdery leaves. Increase direct light gradually after winter so the plant can harden off.
Why is my crassula alstonii mealybugs?
Cottony mealybugs and root mealybugs hide in the packed leaves and root ball. Treat early with rubbing alcohol or insecticidal soap and inspect the roots at repotting, as they are easily missed.