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How to grow cannas
Wait until any threat of frost has passed before planting your cannas.
Cannas are a warm weather plant that don't do well in cold weather. Wait until spring to plant your cannas--when the soil becomes soft and warm from sunlight, its time to get planting.

Possible answers:
1). If you live in a colder area where the warm season is rather short, you could consider starting your cannas in an indoor pot. See part three for how to care for indoor cannas.;
2). Cannas are best planted in late spring or early summer because summer can wear them out after a while. You can plant immediately after the last threat of frost has passed.;
3). Once winter arrives, you can plant your cannas in a dry area that gets little or no direct sunlight. Cannas typically grow up to 3 feet (0.91 m) in height once planted in deep soil.;
4). While some cannas require at least four to eight weeks until the last threat of frost has passed, only about one-fourth of cannas are commercially viable. Wait until at least 6 weeks after the last threat of winter has passed.;
Answer:
1).