When it comes to glossy-leaved plants that can withstand shearing and produce vibrant berries, hollies are in a league of their own. Among these remarkable plants is the Oak Leaf holly (Ilex x “Conaf”), a captivating hybrid from the Red Holly series. Whether as a standalone specimen or part of a glorious hedge, the Oak Leaf holly possesses immense potential. In this article, we will explore the art of growing Oak Leaf hollies and provide essential care tips.
The Allure of Oak Leaf Hollies
The Red Holly Series features cultivars with breathtaking bronze to burgundy new leaf growth. These ornamental plants boast not only attractive foliage but also an appealing form. Among the series’ introductions, the Oak Leaf holly stands out as a popular and easily cultivated plant. This versatile shrub, which can grow into a small tree, is self-pollinating, resulting in the emergence of striking orange-red, pea-sized berries.
But where does the Oak Leaf holly come from? It originated from an open cross, and although the parent plant remains a mystery, nurseryman Jack Magee selected it to be part of the esteemed Red Series in the mid-1990s. The main allure of this series lies in the beautifully colored new growth, and the Oak Leaf holly is no exception.
With its shiny leaves adorned with 3 to 5 serrated margins, the Oak Leaf holly can reach heights of 14 to 20 feet (4 to 6 m.), forming a lovely conical or pyramid shape. The ornamental berries not only add to the plant’s beauty but also serve as a source of food for birds, making it a picturesque addition to any landscape.
Cultivating Oak Leaf Hollies
To successfully grow Oak Leaf hollies, provide them with full to partial sun and plant them in rich, well-draining soil that has a slightly acidic pH. However, these hollies are known for their adaptability and can tolerate a wide range of soil types, as well as periodic droughts. Make sure to keep the soil moist but not overly saturated, as infrequent, deep watering promotes a healthy root system.
Oak Leaf hollies are moderately cold hardy and can thrive in USDA zones 6 to 9. However, it is advisable to protect them from strong winds. These hollies rarely require additional feeding. Applying a balanced or acid-loving fertilizer once in early spring is sufficient to support their growth.
For an awe-inspiring sight, consider using Oak Leaf hollies in a hedge formation. These plants respond well to frequent shearing and create an elegant evergreen backdrop that also provides privacy, thanks to their sharp leaves.
Ensuring Adequate Care
Hollies, including the Oak Leaf variety, are generally hardy plants that can withstand various challenges. However, they may exhibit sensitivity to certain fungal diseases, such as powdery mildew and leaf spots. To combat these issues, utilize a registered fungicide to keep your plants healthy and vibrant.
In soils with high pH levels, you may encounter conditions like chlorosis. To address this, add sulfur to lower the pH and rectify the situation.
Pests are not a significant problem for Oak Leaf hollies. Occasionally, you may encounter scale, whiteflies, spider mites, or holly leaf miners. However, using insecticidal soaps or natural controls like Neem oil can effectively manage these pests.
Keep an eye out for leaf drop and leaf scorch, which can occur when the plant is exposed to intense southern light or when incorrect watering and fertilizing practices are employed.
Overall, Oak Leaf hollies are delightful additions to any landscape. You can let them flourish in their natural form or showcase your creativity by shaping them into imaginative designs or professional hedges.
For more information about Oak Leaf hollies and to explore a wide selection of these stunning plants, visit the Ames Farm Center, where gardening dreams come true.