I live in this state and have been to the International Peace Gardens when I was young (70's) but didn't know the Floral Clock was Built by Bulova...
FLORAL CLOCK
The large clock received from the Bulova Watch Company in 1966 was a duplicate of the famous Bulova Floral Clock at Berne, Switzerland. It was replaced the summer of 2005 with a new clock from St. Louis, Missouri. The Floral Clock, 18 feet in diameter, is a popular attraction at the International Peace Garden, and displays a unique floral design each year. The number of plants on the clock can range from 2,000 to 5,000, depending on the type of plant and design on the face of the clock. Typically the first week in June, 150,000 flowers are planted at the Peace Garden, and best viewed full bloom from mid-July through August. However, the park has its own distinctive beauty all around
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Stuff you just don't know! ;)