Answer: Cannabis Flowers!
While the Mayflower is credited with bringing small pox to the Massachusetts Bay colony, it hardly ever gets recognition for its role in having brought over Cannabis. The ships that sailed in those days were reliant on hemp for sails and cordage, and the sailors used hemp for clothing as well. In the 1600s Hemp was a very valuable resource.
Like the members of the Jamestown Colony the Massachusetts bay Colonists were likewise mandated to grow hemp, as the British Crown was exceedingly concerned with alternative sources of Cannabis for the purpose of bolstering its naval power. Seeds were brought over, and the Puritans were meant to raise the hemp crops, however, hemp never really made it back to England, at least not in terms of the volume the crown had hoped for.
Instead the residents were more concerned with growing tobacco, which was in fact the main cash crop. Even as time went on, as did the cordage industry and while Massachusetts towns of Salem and Rowley were on record for having hemp farms, the majority of the hemp was imported from Russia, especially during the time of Peter The Great.
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