Not sure how giant it really is? Don't believe me? Also that sucker bit me, which wasn't very nice.
Taken this weekend during a lovely bike ride on the bay trail. The thistle had a little path worn out to it from the bike path - clearly I was not the first person to visit it. I am not sure exactly what it is. I don't think it's a cardoon, as it was quite spiky.
All I can show you are giant thistles because all of my knitting is samples, or secret, or "look I knit three more inches of stockinette on this shapeless top-down raglan thing" which isn't particularly interesting. So there you are.