The Q&A Archives: Why does it die

Question: My globe thistle grows fine but after the flowers are full color the plant gets mold and dies. Why This is in an perennial bed with other plants that do fine.

Answer: Echinops, or globe thistle, is not usually prone to insects or diseases so I don't know why yours is developing a mold. These plants thrive in full sunshine and need good air circulation all around so if your plants are overcrowded or not getting all day sunshine they could be prone to developing a fungal disease. It's usually easier to avoid the situations where plants can develop fungal infections than it is to treat them after the fact. I would try growing them in a different garden spot next year, making sure they get lots of sunshine and are not overcrowded, and try to keep water off the foliage of your plants - or at least water early in the morning so the foliage can dry out quickly. Best wishes with your perennial garden!

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