The improvement in the 'Avalanche Rose Improved' Petunia (Petunia x hybrida 'Avalanche Rose Improved') is said to be for more uniform color in an abundance of 3-inch-wide flowers. This annual grows to 10 inches tall and spreads to 30 inches. The NGB rates it "sensational" in sunny hanging baskets, containers, mass plantings, in the garden, or even as a groundcover.