"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." It’s easy to see why petunias are among the most popular flowers for home gardeners: They are abundant, ...

Blooming purple and white petunias grow in the garden. - Just dance/Shutterstock Why buy new petunias (Petunia x hybrida) every spring when you can turn one plant into many? The secret is cuttings.

Although hardy Mexican petunias can survive drought, they grow best with regular watering. If there is no rainfall, watering once a week is usually sufficient for them to flourish. O’Neill adds, ...