The Double Knock Out Rose, scientifically known as Rosa 'Radtko', is a popular variety of shrub rose that is prized for its abundant double blooms and disease resistance. It is a hybrid rose that was bred from the original Knock Out Rose.
The Double Knock Out Rose is known for its prolific blooming throughout the growing season. It produces clusters of fully double flowers that have a rich, vibrant color. The flowers start as a deep red or pink and fade to a softer hue as they age. The foliage is dark green and glossy, providing an attractive backdrop to the blooms.
One of the key characteristics of the Double Knock Out Rose is its exceptional disease resistance. It has a high resistance to common rose diseases such as black spot and powdery mildew. This makes it a low-maintenance option for gardeners who want to enjoy beautiful roses without having to constantly worry about disease control.
In terms of size, the Double Knock Out Rose typically grows to a height and spread of around 3-4 feet (90-120 cm). It has a compact and bushy growth habit, making it suitable for a variety of landscaping purposes, including borders, hedges, or standalone specimens.
Caring for Double Knock Out Roses involves planting them in a location with full sun exposure and well-draining soil. They benefit from regular watering and benefit from a layer of mulch to help retain moisture. Pruning can be done in early spring to maintain shape and promote new growth.
Overall, the Double Knock Out Rose is a popular choice among gardeners due to its profusion of double blooms, disease resistance, and easy care requirements. It brings vibrant color and beauty to gardens, making it a versatile and reliable rose variety.