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'Knock Out' Rose Knock Out was first introduced in 2000 and hailed a "breakthrough shrub rose" by the All-American Rose Selections because of its exceptional disease resistance and hardiness. It was one of three roses to win the prestigious AARS award for outstanding garden performance in 2000. Hardiness: Zones 4 - 9 Exposure: Full sun Size: Height 4 feet tall, 3 feet wide Bloom Time: Spring to frost. Care: Use drip or soaker hose irrigation.
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