For the sake of historical accuracy...where Sutter got his seeds was unknown, but it is clear from this 1846 first-hand report that he wasn't known for his "kind":
""I saw near the fort a small patch of hemp, which had been sown as an experiment, in the spring, and had not been irrigated. I never saw a ranker growth of hemp in Kentucky""
http://boitano.net/column/?cat=3
There is historical record of the Spanish picking up hemp grown by slaves at the Missions in Southern California in the early 1800's.

Lest I further fray this thread....
Kanaka gold miners were the first to find nuggets at Kanaka Creek in 1850 in the Alleghany mining district of California starting a huge rush to that area. A Kanaka made the nugget discovery that started the rush to the Downieville area. The story goes that a nugget fell out of a trout caught by the Kanaka as he prepared or cooked it for the Downie party. Two of the Kings sons came to mine gold in California, Prince Lot and Prince Alexander.
A female commentator from the mid 1800's describes the sound of the voices of all the nationalities heard during a day at a mining camp.'The liquid sweetness of the Kanaka'is how she described the music of the Kanaka language.