Troubleshooting
Bon Bon Mix Pot Marigold problems — and how to fix them
Bon Bon Mix Pot Marigold (Calendula officinalis) 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
White powdery coating on leaves in warm, humid or dry conditions; choose resistant varieties, improve air circulation, and treat early with a bicarbonate-based spray.
Aphids
Blackfly and greenfly cluster on stems and buds; a sharp water jet or insecticidal soap spray resolves most infestations.
Slugs and snails
Young seedlings are particularly vulnerable; protect with iron phosphate pellets or copper barriers.
Failing to flower in summer heat
Calendula is cool-season; plants slow or cease flowering when temperatures exceed 27°C. Resume sowing in late summer for an autumn display.
Botrytis in wet weather
Remove dead flowers promptly and avoid overhead irrigation to reduce grey mould risk in prolonged wet periods.
Prevent bon bon mix pot marigold problems before they start
Most bon bon mix pot marigold issues are care-mismatch, not bad luck. Dial in the basics:
Bon Bon Mix Pot Marigold problems — FAQ
Why is my bon bon mix pot marigold powdery mildew?
White powdery coating on leaves in warm, humid or dry conditions; choose resistant varieties, improve air circulation, and treat early with a bicarbonate-based spray.
Why is my bon bon mix pot marigold aphids?
Blackfly and greenfly cluster on stems and buds; a sharp water jet or insecticidal soap spray resolves most infestations.
Why is my bon bon mix pot marigold slugs and snails?
Young seedlings are particularly vulnerable; protect with iron phosphate pellets or copper barriers.
Why is my bon bon mix pot marigold failing to flower in summer heat?
Calendula is cool-season; plants slow or cease flowering when temperatures exceed 27°C. Resume sowing in late summer for an autumn display.
Why is my bon bon mix pot marigold botrytis in wet weather?
Remove dead flowers promptly and avoid overhead irrigation to reduce grey mould risk in prolonged wet periods.