Possible Clues:

• Is potentially reaching a peak in traditional craft
• Craft on the hawthorn
• That got blooming well across the Atlantic
• That's one that could possibly blossom across the Atlantic
• Ship on which the Pilgrim Fathers sailed
• Perhaps blooming well started States
• Reshaping formal yew shrub
• Celebrated craft of Hollywood producer, involving continuity
• Plymouth
• Ship that took the Pilgrim Fathers to Massachusetts in 1620