What Is Cause And Treatment For Cayenne Chili Plant Leaf Wilt, Curl And Spots?

Question

Planted sub tropical coastal SE Qld a few months ago. Grew tall very quickly and flowered then suddenly the leaves drooped/wilted like a plant that had been over or under watered. Thought it might have been caused by a night or two of cold. We don’t get frost here. At the same time the old established and recently pruned bay tree next to chili also had similar leaf wilt but seems to have recovered. Rosemary has also died off and has brown tips on leaves. Chili Plant has grown lots of chillies and is still flowering even more since original wilt issue but now leaves are curling and have spot. Same problem on capsicum plant in another bed and recently the silverbeet.

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Answer 1

I see what looks like possibly compounded infections. Fungal and bacterial infections can have very similar characteristics, but this looks more fungal to me. This is usually caused when infections have the proper environment to survive. If it is wet for too long, or too humid, then it is the perfect breeding ground. From here, fungicides will be necessary. Although not a guarantee, it will increase the chances of survival. Increasing airflow and allowing the area to dry out a little between waterings will be a big help, as well.

https://www.gardeningknowhow.com/edible/vegetables/pepper/pepper-problems.htm

https://www.gardeningknowhow.com/garden-how-to/info/using-fungicides-in-garden.htm