I was freeroaming around Solstheim when I came across an island just off the coast. It's right in the north-eastern corner of the map (I think), pretty much directly north of 'Frossel'. On there, I climbed to the highest point, and found 3 GIANT Nirnroots. These things were HUGE! And when I harvested them, they each yielded 3 Nirnroots. So cool and I haven't seen anyone notice this yet, although a few of you guys probably have. Picture evidence would be nice if anyone could find these for me.

EDIT: Upon further exploration of the island, a few more giant Nirnroots are dotted around! And on the island there's also a boat with a chest, backpack and East Empire Strongbox on!