Cannas can be just a little bit picky. They like sunlight and water. Are they getting enough, say 6 hours of sun? Is the soil consistently moist? But not soggy? They may be planted too deeply; 2 to 3 inches is deep enough. Too deep can also be too wet. They like rich, organic soil. And can do with a monthly fertilizer that is higher in phosphate (than nitrogen, which encourage stem and foliage growth).
Cannas can be just a little bit picky. They like sunlight and water. Are they getting enough, say 6 hours of sun? Is the soil consistently moist? But not soggy? They may be planted too deeply; 2 to 3 inches is deep enough. Too deep can also be too wet. They like rich, organic soil. And can do with a monthly fertilizer that is higher in phosphate (than nitrogen, which encourage stem and foliage growth).
We hope this helps.