Troubleshooting
Changing Tibouchina problems — and how to fix them
Changing Tibouchina (Tibouchina mutabilis) is generally low-drama, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Bud and flower drop
Abrupt temperature changes, cold draughts, or sudden dry spells cause buds to drop before opening; site away from doors and heating vents, and maintain consistent moisture during the bud-formation period.
Whitefly
Clouds of tiny white insects lift from the undersides of leaves when disturbed; treat with yellow sticky traps and insecticidal soap or a pyrethrin-based spray applied in the evening, repeating every five to seven days for three to four applications.
Prevent changing tibouchina problems before they start
Most changing tibouchina issues are care-mismatch, not bad luck. Dial in the basics:
Changing Tibouchina problems — FAQ
Why is my changing tibouchina bud and flower drop?
Abrupt temperature changes, cold draughts, or sudden dry spells cause buds to drop before opening; site away from doors and heating vents, and maintain consistent moisture during the bud-formation period.
Why is my changing tibouchina whitefly?
Clouds of tiny white insects lift from the undersides of leaves when disturbed; treat with yellow sticky traps and insecticidal soap or a pyrethrin-based spray applied in the evening, repeating every five to seven days for three to four applications.