Think petunias are
only useful as bedding plants?
Mike Dana, Extension Landscape Horticulture Specialist,
Dept. of Horticulture & Landscape Architecture, Purdue University
The vining types such as Wave
cultivars make excellent hanging basket subjects. But the secret
to success is regular fertilization all summer long. At least
once per week, use a water soluble fertilizer (at manufacturer’s
recommended rate) in your irrigation water. Water thorougly,
so that at least some water runs through the basket. That will
keep those petunias flowering profusely right up until frost.