The Knock Out® Double Red Rose Tree is a popular variety of the Knock Out® family of roses, known for its vibrant red blooms, disease resistance, and easy care. This tree form is created by grafting the Knock Out® rose shrub onto a standard or trunk, giving it the appearance of a small flowering tree. Here’s what you need to know about caring for and growing a Knock Out® Red Rose Tree:

Key Features:

1. Flowers: The Knock Out® Red Rose Tree produces abundant, vibrant cherry-red flowers that bloom continuously from spring until the first frost. The blooms are typically double-petaled, with each flower measuring about 3 to 4 inches in diameter. The flowers have a light, sweet fragrance.

2. Growth Habit: The tree form of the Knock Out® Red Rose grows to a height of 4 to 7 feet, with a spread of about 3 to 4 feet. It has a rounded, bushy canopy that is covered in blooms throughout the growing season.

3. Foliage: The foliage is deep green with a slight sheen, providing a beautiful backdrop for the red flowers. New growth often has a reddish tint, adding to the plant's visual appeal.

4. Disease Resistance: One of the standout features of the Knock Out® series is its strong resistance to common rose diseases such as black spot, powdery mildew, and rust. This makes it a low-maintenance option for gardeners.

General Care Tips:

1. Light: The Knock Out® Red Rose Tree thrives in full sun, which encourages abundant flowering and healthy growth. It can tolerate partial shade, but flowering may be reduced.

2. Soil: This rose tree prefers well-drained, slightly acidic soil enriched with organic matter. If your soil is heavy clay or sand, consider amending it with compost or other organic materials to improve drainage and fertility.

3. Watering: Regular watering is essential, especially during dry spells. Water deeply at the base of the plant, avoiding overhead watering to minimize the risk of disease. Aim to keep the soil evenly moist but not waterlogged.

4. Fertilization: Feed the Knock Out® Red Rose Tree with a balanced rose fertilizer in early spring, just as new growth begins. You can fertilize again during the growing season to encourage continuous blooms. Be sure to follow the fertilizer instructions to avoid overfeeding.

5. Pruning: Pruning is typically done in late winter or early spring before new growth starts. Prune back the branches by about one-third to maintain the desired shape and size. Remove any dead, damaged, or crossing branches to promote good air circulation and prevent disease. Light deadheading (removal of spent blooms) can encourage more flowers, although Knock Out® roses are self-cleaning and do not require extensive deadheading.

6. Winter Protection: In colder climates (USDA zones 5-11), mulch around the base of the tree to protect the roots during winter. If you live in a particularly cold area, you may need to wrap the trunk or provide additional protection to prevent winter damage.

The Knock Out® Red Rose Tree is a versatile and stunning addition to gardens, patios, and landscapes. Its continuous blooms, low maintenance requirements, and striking appearance make it a favorite for both beginner and experienced gardeners.

Plant Details

Bloom Information

Key Features

• Deciduous
• Heat Tolerant
• Fragrant