Because of the globe-shaped habit, this plant has a perfect presentation as a petunia in for containers and hanging baskets for containers and is a star in landscapes where it won’t sprawl too wide to cover pathways as a trailing petunia plant or take over neighboring plants.

These are heat tolerant plants that aren't particularly fussy and need little routine maintenance as a long blooming petunia plant. They will perform best if an application of controlled release fertilizer is included at the time of planting. This applies to both landscape and container plantings.

Supertunias are heavy feeders, but a single dose is usually sufficient for landscape beds in most climates. If you have a very long season, a second application of controlled release plant food should be considered for landscape plantings.

In general, containers need to be fed more than landscape plants. Supertunias in containers will need to be fed more regularly to be their absolute best as a petunia for containers and hanging baskets. A second application of a controlled release fertilizer can be applied about every two months to container plants, which will help.

However, for the very best long blooming petunia performance, I find regularly applying water soluble fertilizer starting about two months after the containers are planted gives the best results. These extra applications of plant food really make a difference in performance through the summer.

If your trailing petunia plant begins to look open or a bit tired, an allover trim can be beneficial. Use a sharp pair of scissors or pruning shears to trim back up to 1/3 of the volume of the plant.

I pair any trim with a dose of water soluble fertilizer to provide instant energy to help kickstart new growth, branching and flowering of mounding petunia flowers. Your plant will take a week to recover from the trim, but the end result is a fuller plant with more blooms going forward. You may repeat the trim as needed through the season.