Troubleshooting
Mysore trumpetvine problems — and how to fix them
Mysore trumpetvine (Thunbergia mysorensis) 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.
Bud drop
Sudden loss of flower buds is typically caused by a sharp drop in temperature, cold draughts, or very dry air. Maintain temperatures above 13°C (55°F), keep away from draughts, and mist regularly to maintain humidity.
Red spider mite
A common pest in warm, dry glasshouse conditions. Fine bronze stippling on leaves with webbing underneath indicates infestation. Raise humidity, mist foliage, and introduce the biological control Phytoseiulus persimilis or apply an appropriate acaricide.
Failure to flower
Thunbergia mysorensis often requires a cooler, slightly drier winter rest (minimum 10–13°C / 50–55°F with reduced watering) to trigger the next flush of flowers. Without this rest period, flowering diminishes over time.
Prevent mysore trumpetvine problems before they start
Most mysore trumpetvine issues are care-mismatch, not bad luck. Dial in the basics:
Looking for mysore trumpetvine in general rather than its problems? Read the full mysore trumpetvine care guide — light, water, soil and feeding.
Mysore trumpetvine problems — FAQ
Why is my mysore trumpetvine bud drop?
Sudden loss of flower buds is typically caused by a sharp drop in temperature, cold draughts, or very dry air. Maintain temperatures above 13°C (55°F), keep away from draughts, and mist regularly to maintain humidity.
Why is my mysore trumpetvine red spider mite?
A common pest in warm, dry glasshouse conditions. Fine bronze stippling on leaves with webbing underneath indicates infestation. Raise humidity, mist foliage, and introduce the biological control Phytoseiulus persimilis or apply an appropriate acaricide.
Why is my mysore trumpetvine failure to flower?
Thunbergia mysorensis often requires a cooler, slightly drier winter rest (minimum 10–13°C / 50–55°F with reduced watering) to trigger the next flush of flowers. Without this rest period, flowering diminishes over time.