I just purchased quick fire, it's a dwarf
Hydrangea paniculata Little Quick Fire® 'SMHPLQF' (PP25136, 2014) was developed by Timothy D. Wood of Michigan. An open-pollination of Hydrangea paniculata 'Bulk' as the seed parent. As the name implies, it's a dwarf variety ( 3-5 feet tall). It blooms about one month before other hydrangeas. White flowers turn pink as summer progresses. Blooms on new wood. Flower color is not affected by soil pH. A Proven Winners® selection. Paniculata hydrangeas are the most cold hardy (Zone 3-8). Native to Asia. Stiff upright branches do not splay. Flowers are more cone-shaped rather than ball-shaped.