Troubleshooting
Coleus problems — and how to fix them
Coleus (Solenostemon scutellarioides) 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.
Leggy, straggly growth
Caused by insufficient light or failure to pinch regularly. Move to a brighter location and pinch stem tips every 2–3 weeks to encourage bushy branching. Remove any flower spikes as soon as they appear — flowering causes the plant to decline.
Sudden wilting
Coleus wilts fast under drought stress but usually recovers after watering. Persistent wilting despite moist soil indicates root rot or root damage. Check roots and repot if necessary, cutting away any black, mushy sections.
Mealybugs and whitefly
Common pests in warm dry conditions. Inspect leaf axils and stem joints regularly. Remove mealybugs with a cotton swab dipped in rubbing alcohol; treat whitefly with yellow sticky traps and insecticidal soap spray.
Prevent coleus problems before they start
Most coleus issues are care-mismatch, not bad luck. Dial in the basics:
Looking for coleus in general rather than its problems? Read the full coleus care guide — light, water, soil and feeding.
Coleus problems — FAQ
Why is my coleus leggy, straggly growth?
Caused by insufficient light or failure to pinch regularly. Move to a brighter location and pinch stem tips every 2–3 weeks to encourage bushy branching. Remove any flower spikes as soon as they appear — flowering causes the plant to decline.
Why is my coleus sudden wilting?
Coleus wilts fast under drought stress but usually recovers after watering. Persistent wilting despite moist soil indicates root rot or root damage. Check roots and repot if necessary, cutting away any black, mushy sections.
Why is my coleus mealybugs and whitefly?
Common pests in warm dry conditions. Inspect leaf axils and stem joints regularly. Remove mealybugs with a cotton swab dipped in rubbing alcohol; treat whitefly with yellow sticky traps and insecticidal soap spray.