Red Valerian and Trim Castle

Recognizing very few plants, I bought a copy of Zoe Devlin's "The wildflowers of Ireland" (a wonderfully thorough guide). I believe that this is Red Valerian. This plant was growing out of old stone walls everywhere. It is an introduced species, not sure from where. With it's mild climate and regular rainfall, Ireland sometimes has problems with introduced species becoming very comfortable in thier new home.

Done