­If you’re planning to brighten up your landscaping, sunroom or garden, planting Petunia flowers can make it one of a kind. Petunia is an annual flower that has captivated breeders with its funnel-shaped flowers with crisped, curled, waved, and doubled variations. Petunia has a range of colours from pink to red, lavender, purple, peach, white, cream, and even yellow.