Originally Posted by Chickielady
I have one for you:
Someone gave me a bunch of seed packets, and one is "Sea Holly" and was wondering if it is invasive...it looks for all the world like a thistled & we do not want them here !
Just wondering...never seen it before.................
Eryngium. Not invasive in my experience in our region, but can be pushy in the garden. "Doesn't like to share with others". Not easy to remove once it's in there, but no, not invasive. But then again, my Linnaria self-sowed and was pretty in Seattle and is downright annoying here in the Chehalis valley. My book (Sunset Western Garden Guide--gotta have it) says to sow in place. I have never planted this plant, only maintained it. Very beautiful. Also, apparently sensitive to winter wetness and slugs, so sow them in a well drained, sunny location. Not a thistle relative. Carrot family, Apiaceae, apparently.