How To Take Care Of Canna Flowers. 21092017 Apply a balanced all-purpose plant fertilizer to the soil around your canna plants once in spring and again in mid-summer. Deadhead Cannas throughout the growing season to keep them blooming for as long as possible.
Cannas are not picky when it comes to fertilizer. 29102019 Canna bulbs must be stored over winter in a place not reaching below freezing so they can be planted in early spring. After flowering you may reduce watering.
Water well and apply a layer of mulch to retain moisture.
Immediately after the. Sprinkle it onto the soil around the base of each canna lily then water the garden bed. Apply a general purpose fertilizer in mid-season to promote a brilliant display. If you live in an area that gets frost you will need to dig up your rhizomes after the frost kills the foliage of your cannas.