Fact checked by Jillian Dara Roses, long a gardener's favorite and our country's National Flower, still suffer from the reputation of being hard to grow. In reality, many modern roses like 'Knock Out' ...

the Knock Out rose became available for the public to purchase in 2000. Thanks to its vibrant colors, hardiness, and long-lasting blooms, the Knock Out rose soared in popularity as soon as it was ...