Toucan^® Yellow Canna Lily Canna generalis

While deadheading is not necessary to keep them blooming all summer, removing seed pods will likely improve appearance.

In containers an application of controlled release fertilzer should be sufficient for the season, but supplementing with a water soluble plant food starting mid-summer can keep them performing at their best. 

In landscapes, the controlled release application at planting should be enough to last all summer.

Water needs are simple and the plants are quite adaptable, even tolerating standing water for short periods of time.  They can also take periods of relatively dry soil, although consistent moisture will produce the very best plants.