Robertsanswered grow question 2 years ago I believe the plant has a virus. I just lost almost 2 dozen plants to one infected plant that spread. It is dudding disease or hplvd. Over half showed this sign. It shows in several different ways. Can infected ever parts of plants and other parts look fine. I would need to see more details, pictures, etc. to confirm. If you use tools or do not sterlize your hands and tools between plants then they all likely have it. Was how it started for me.