My Night Blooming Cereus Has Been Shriveling Into Black

Question

I did find this plant on the street and try to take it in a year ago. The new leaves would shrivel into black and the old leaves would do that eventually as well. There were bugs in it I realize I didn’t properly get rid of the old soil. So this summer I fully repotted it, cut off all the blacken leaves and a bunch of new leaves grew and I thought it got better for 2 months. Now new growth are starting to shrivel again and I notice there are tiny black spots on the leaves. I rarely water it now following the app Planta’s recommendations

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Answer 1

In order to rid the plant of the infection, it will need to be treated. A fungicide will be in order. This article will help:

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