Replying to @rootsandcalluses@mstdn.social
@rootsandcalluses
There are four plants in a row, two Shirley, a Marmande and this one, Alicante.
They all get the same light (filtered through a fleece), the same amount of water, in fact, the same everything.
The leaves are soft, no odd smells. The stem below the growing top looks healthy. Nothing on the leaves, no spots or living things.
Affected plant second from left

