Attractive, tall, feathery spikes of cream and biscuit shades will gently ruffle in the slightest breeze. This quick- and easy-to-grow plant adds height and interest to summer displays straight through to autumn, or it may be used as an intriguing cut flower. This half-hardy annual will grow in any well-drained soil in full sun. Autumn Palette.' Proper name: Amaranthus paniculatus.