Troubleshooting
Climbing Onion problems — and how to fix them
Climbing Onion (Bowiea volubilis) 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.
Bulb rot from overwatering during dormancy
If the vine has died back and you continue to water, the bulb will rot from the base upward. The dormant bulb requires a completely dry rest. If rot is caught early, cut away the affected tissue, dust with fungicide, and allow to dry before replanting.
Vine fails to emerge in season
Usually caused by the bulb not receiving a dry rest period. Ensure the bulb is kept dry for at least 2 months in summer, then resume watering in autumn–winter to trigger vine growth. Very old or damaged bulbs may be slow to respond.
Spider mites on vines
Fine webbing and stippled browning on the thread-like stems in warm, dry conditions indicates spider mites. Treat with neem oil or insecticidal soap spray and increase air circulation; repeat applications every 7–10 days for 3–4 weeks.
Prevent climbing onion problems before they start
Most climbing onion issues are care-mismatch, not bad luck. Dial in the basics:
Climbing Onion problems — FAQ
Why is my climbing onion bulb rot from overwatering during dormancy?
If the vine has died back and you continue to water, the bulb will rot from the base upward. The dormant bulb requires a completely dry rest. If rot is caught early, cut away the affected tissue, dust with fungicide, and allow to dry before replanting.
Why is my climbing onion vine fails to emerge in season?
Usually caused by the bulb not receiving a dry rest period. Ensure the bulb is kept dry for at least 2 months in summer, then resume watering in autumn–winter to trigger vine growth. Very old or damaged bulbs may be slow to respond.
Why is my climbing onion spider mites on vines?
Fine webbing and stippled browning on the thread-like stems in warm, dry conditions indicates spider mites. Treat with neem oil or insecticidal soap spray and increase air circulation; repeat applications every 7–10 days for 3–4 weeks.