Answer: Joseph's Coat, or Amaranthus tricolor, is an annual plant that grows in all gardening zones. They perform best in full sun to partial shade, in average, well-draining soils. The plants require regular watering during the growing season to produce the 4" long, 2"-4" wide leaves with their spectacular colors. The seeds need warm soil in order to germinate, so plant outdoors in late spring for a summer long display of color.
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