Troubleshooting
Trailing African daisy problems — and how to fix them
Trailing African daisy (Osteospermum fruticosum) 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.
Powdery mildew
Occurs in humid conditions with poor air circulation. Improve spacing, avoid overhead watering, and treat with a sulphur-based or potassium bicarbonate spray if needed.
Aphids
Clusters on new growth and buds, causing distortion. Blast off with water or treat with insecticidal soap; encourage natural predators such as ladybirds.
Failure to flower in heat
Osteospermum fruticosum can cease blooming when temperatures exceed 27°C. Provide afternoon shade in hot climates, deadhead regularly, and flowering typically resumes as temperatures cool.
Prevent trailing african daisy problems before they start
Most trailing african daisy issues are care-mismatch, not bad luck. Dial in the basics:
Looking for trailing african daisy in general rather than its problems? Read the full trailing african daisy care guide — light, water, soil and feeding.
Trailing African daisy problems — FAQ
Why is my trailing african daisy powdery mildew?
Occurs in humid conditions with poor air circulation. Improve spacing, avoid overhead watering, and treat with a sulphur-based or potassium bicarbonate spray if needed.
Why is my trailing african daisy aphids?
Clusters on new growth and buds, causing distortion. Blast off with water or treat with insecticidal soap; encourage natural predators such as ladybirds.
Why is my trailing african daisy failure to flower in heat?
Osteospermum fruticosum can cease blooming when temperatures exceed 27°C. Provide afternoon shade in hot climates, deadhead regularly, and flowering typically resumes as temperatures cool.