Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to grow cannas [title] Wait until any threat of frost has passed before planting your cannas. [step] 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.

Ending1: [substeps] 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. Ending2: [substeps] 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. Ending3: Once winter arrives, you can plant your cannas in a dry area that gets little or no direct sunlight. [substeps] Cannas typically grow up to 3 feet (0.91 m) in height once planted in deep soil. Ending4: 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 format: ending1/ending2/ending3/ending4