I have eryngiums with leaves that look a lot like that. They die back completely in the winter and the new growth comes from ground level. They have a thick tap root, so if that's what you pulled out, it might have germinated without you noticing!
Doncaster, South Yorkshire. Soil type: sandy, well-drained
Will be interesting to see if it ever flowers. It's north facing so not full sun where it is, though the fairy rose has been there for a few years and flowers ok.
Hi so if this is eryngium should I replant it elsewhere? Seems to be outcompeting the fairy rose. When is best time or should I remove and plant the rose elsewhere?
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