Answer: Wave Petunias have been around for a few years now and are pretty much well known, but many people are wondering what the difference between a Wave and a Supertunia is. In my opinion, the difference is in the colors available, the fertilizing requirements and the growth habits. Wave's generally stay around 6-8 inches tall, but spread up to 4 feet. The flowers are 2 inches across, and bloom profusely all summer long, and into the fall.
Supertunias are brilliant in color, incredibly weather resistant and low maintenance. Gardeners delight in the sophisticated new shades of white, pink, and purple. Supertunias are a vigorously trailing species of an everblooming, long-living petunia from Australia. Available in many, many different colors, they provide long-season color, and can grow nearly an inch a day! Their profuse blossoms and fast growth make them ideal for baskets, beds, balconies and combination plantings.
Tidal Wave Petunias were new to the market last year, and are becoming known as a Hedgiflora petunia because they can grow up to 3 feet tall if spaced closely together. Flowers are 2 inches across, and each plant can grow 10 inches tall and spread 3 feet on it's own, or if planted up to 10 inches apart, they'll grow 2-3 feet tall. Available in only 3 colors so far, I'm betting there will be more before you know it! Very heat and drought tolerant once established in the ground.
Avalanche Petunias are a new look in spreading/pendulous growth habit types. They hold up well in wet weather and are more compact in growth than the Waves. They flower much earlier than the Waves, and grow 8 inches tall and 2 feet across.
Trailblazer Petunia is another spreading type, available in brilliant purple only. Flowers 14 days earlier than a Wave, and grows slightly taller with more flowers, which provides more show of brilliant color!
Hope these descriptions shed some light for you on the Wave series of petunias!
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