Cannas easily bloom all summer without much effort. But for those of you who want to give your plants an extra boost, apply a 5-10-5 or 10-10-10 in the spring and, if you wish, two more times during the growing season.
Does a canna lily come back every year?
Cannas grow in U.S. Department of Agriculture plant hardiness zones 7 through 10, and this perennial needs little winter care. In frost-prone areas, the flower stalks and leaves will die back to the ground and new growth will emerge in spring but in frost-free climates, cannas grow year-round.
What to do with cannas after flowering?
- Water freely in dry spells.
- Apply a liquid fertiliser in midsummer.
- Deadhead to encourage continued flowering.
- Little pruning or training is needed. …
- When a flower spike has no more buds, prune it down to the next side shoot where a secondary flower spike should develop.
