Petunia | |
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Petunia x atkinsiana flower | |
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Genus: | Petunia |
Petunia is a genus of 20 species[1] of plants of South American origin. All of them bear flowers. They are in the Nightshade family, and are related to tobacco. Many people grow them in the garden. Petunias are usually used as annual plants, because they die when the weather becomes cold. They grow best when they are planted in the sun.