Thanks to the advice of experts from the Plant Clinic, understand the diseases of your flowers and learn how to treat them. Today, it is a variegated charcoal which is submitted to Frédéric Marque, following the colonization of the plant by caterpillars. Follow his analysis and recommendations on video!
Question from the user
<< Bonjour, j'ai un souci avec mon fusain panaché. Depuis peu, des dizaines de chenilles tissent leurs nids dans les feuilles, pondent et se multiplient très rapidement. Ma plante se trouve à l'extérieur, en plein soleil. J'ai bien essayé d'enlever les nids à la main ou en arrosant, mais les insectes reviennent systématiquement à la charge. >>
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Auscultation and diagnosis
The variegated charcoal presented to Frédéric Marque is not an isolated case. Indeed, this plant is regularly the subject of various and varied diseases. In this case, it is infested with silky nests containing caterpillars that the owners have tried to remove by hand, or by watering. Unfortunately, the insects came back each time. These caterpillars are actually butterflies called hyponomeutes, whose purpose is to lay abundantly in plants so that the larvae feed on the leaves.
Answer: manual disposal or with insecticides
The owner of this variegated charcoal can again attempt manual removal of the tracks. If this technique does not work, he will then be forced to use insecticides. The treatment must be done on the plant, but also in the surroundings because the caterpillars leave their nest daily to feed. It will prevent butterflies from forming and laying eggs in nearby plants.
Generally, the variegated charcoal does not present any concern at the agronomic level. Its main problems come from various diseases: - powdery mildew, which can be treated by avoiding the presence of excessive water on the foliage, - aphids, which can be watered when they are few, - growth shocks , which can be avoided by providing the plant with fertilizer, or by repotting it regularly. You too, ask your questions at The Plant Clinic!