Troubleshooting
Pelargonium x domesticum 'Lavender Grand Slam' problems — and how to fix them
Pelargonium x domesticum 'Lavender Grand Slam' (Pelargonium x domesticum 'Lavender Grand Slam') 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.
Reduced flowering without a rest
Even free-blooming regals flower best after a cool winter rest and bright spring light; warm winters cut the display.
Pelargonium rust
Brown pustules under leaves in humid air; remove infected leaves promptly and improve airflow.
Botrytis on dense trusses
Grey mould settles on the packed flower heads in damp air; deadhead spent blooms and ventilate well.
Aphids and whitefly
Sap-suckers that distort new growth under glass; rinse off or treat with insecticidal soap.
Prevent pelargonium x domesticum 'lavender grand slam' problems before they start
Most pelargonium x domesticum 'lavender grand slam' issues are care-mismatch, not bad luck. Dial in the basics:
- What's wrong with my plant? — the diagnosis apps compared
- Pelargonium x domesticum 'Lavender Grand Slam' watering schedule
- Pelargonium x domesticum 'Lavender Grand Slam' light requirements
- Best soil mix for pelargonium x domesticum 'lavender grand slam'
- Pelargonium x domesticum 'Lavender Grand Slam' temperature & humidity
- Full pelargonium x domesticum 'lavender grand slam' care guide
Looking for pelargonium x domesticum 'lavender grand slam' in general rather than its problems? Read the full pelargonium x domesticum 'lavender grand slam' care guide — light, water, soil and feeding.
Pelargonium x domesticum 'Lavender Grand Slam' problems — FAQ
Why is my pelargonium x domesticum 'lavender grand slam' reduced flowering without a rest?
Even free-blooming regals flower best after a cool winter rest and bright spring light; warm winters cut the display.
Why is my pelargonium x domesticum 'lavender grand slam' pelargonium rust?
Brown pustules under leaves in humid air; remove infected leaves promptly and improve airflow.
Why is my pelargonium x domesticum 'lavender grand slam' botrytis on dense trusses?
Grey mould settles on the packed flower heads in damp air; deadhead spent blooms and ventilate well.
Why is my pelargonium x domesticum 'lavender grand slam' aphids and whitefly?
Sap-suckers that distort new growth under glass; rinse off or treat with insecticidal soap.