A sport of H. 'Grand Tiara', this
cultivar was registered by
Walters Gardens, Inc.
in 1998. The margins of this medium sized plant start the season yellow and then turn
creamy white later in the year. It bears purple flowers in July.
According to
The Hostapedia by Mark Zilis
(2009), "In my mind, 'Grand Prize' rates as the best of the
Walters Gardens 'Grand Tiara' sports."