Nandina Obsession is a popular ornamental shrub known for its vibrant foliage. This compact cultivar displays striking red new growth that matures to a deep green. Its dense form makes it suitable for various landscape applications. This article will explore the growth rate of Nandina Obsession, factors that influence it, and how to manage its size.
Understanding Nandina Obsession Growth
Nandina Obsession exhibits a moderate growth rate, adding between 6 to 24 inches in height annually under optimal conditions. This steady pace allows for predictable garden planning without rapid overgrowth.
This cultivar is recognized for its naturally compact habit, distinguishing it from larger Nandina varieties. At maturity, Nandina Obsession reaches a height and spread of 3 to 4 feet. Its contained size makes it an excellent option for smaller gardens, containers, or areas where space is a consideration.
Key Factors Influencing Growth
The growth vigor of Nandina Obsession is significantly influenced by its environment. The shrub thrives in full sun to partial shade, with brighter red foliage in sunnier locations. Providing at least six to eight hours of direct sunlight per day can promote robust growth and vibrant color.
Soil conditions also play a role in healthy development. Nandina Obsession prefers well-drained soil, though it can adapt to various soil types, including sandy or clay, as long as drainage is sufficient. A slightly acidic to neutral pH (6.0-7.0) supports nutrient uptake. Consistent moisture is beneficial for young plants to establish a strong root system, but established shrubs are drought-tolerant and do not tolerate waterlogged conditions.
Fertilization can support healthy growth, though it is not required for excessive growth. Applying a balanced, slow-release fertilizer in early spring can provide essential nutrients. Finally, growing Nandina Obsession within its suitable USDA Hardiness Zones (6 through 10) ensures the climate supports its overall health and development.
Managing Nandina Obsession Size
Due to its inherent compact nature, Nandina Obsession requires minimal pruning for size control. Its mature dimensions of 3 to 4 feet tall and wide mean it naturally maintains a manageable form. However, occasional pruning can be performed to maintain its shape, remove any dead or diseased branches, or encourage a denser appearance.
Pruning is best done in late winter or early spring before new growth emerges, though light shaping can occur at other times. When pruning, make cuts just above a leaf node and avoid shearing, which can detract from the plant’s natural grace. Choosing the right planting location initially, considering its mature size, helps to minimize the need for extensive future pruning and ensures the shrub has adequate space to flourish.