Plants bloom heavily in June and produce additional, intermittent blooms through the summer. William Baffin' is an upright growing plant which can reach a height of 8 to 10 feet. William Baffin' is named after the English navigator who searched for the Northwest Passage in the early seventeenth century. The long, arching stems of 'Henry Kelsey' may grow 8 to 10 feet long. Henry Kelsey' produces red, semi-double flowers with centers of golden yellow stamens.
Plants bloom heavily in early summer and intermittently through the summer.
The glossy foliage is highly resistant to powdery mildew and moderately resistant to black spot. The variety is named after Henry Kelsey, an agent of the Hudson's Bay Company who explored the Canadian plains.