Cannas have lush foliage, but can be top heavy. Try underplanting cannas with low-growing pots to cover up those bare ankles. The plants in the containers are:
Lime foliage - Ipomea (potato vine)
Purple foliage - Setcreasea
Orange flowers trailing - Calibrachoa (Million bells)
Purple flowers trailing - Calibrachoa
Around the cannas I plant Dahlias (peach coloured ones), Salvia 'Black and Blue', Coleus 'Sedona'.