Amber Jubilee Ninebark

The Amber Jubilee Ninebark (Physocarpus opulifolius ‘Jefam’) is a popular and low-maintenance deciduous shrub known for its stunning, multi-season interest, particularly its vibrant foliage. It was named in honor of Queen Elizabeth II’s Diamond Jubilee in 2012.

Key Characteristics

• Foliage: This is the plant’s main attraction. The new leaves in spring emerge in brilliant shades of amber, gold, and orange. As the season progresses, the foliage matures to a mix of green and gold with hints of red. In autumn, the leaves put on a final show, turning to harvest tones of yellow, orange, and deep red or purple before they drop.
• Flowers: In late spring to early summer, the shrub produces clusters of small, white or pale pink, spirea-like flowers. These blooms are a magnet for bees, butterflies, and other pollinators.
• Bark: The name “ninebark” comes from the exfoliating bark of mature stems, which peels away in layers to reveal a reddish-brown inner bark, providing textural interest in the winter.
• Growth Habit: It has a dense, upright, and mounded form. It typically reaches a height of 5 to 6 feet with a similar spread.
• Hardiness: Amber Jubilee Ninebark is exceptionally hardy and can be grown in USDA Hardiness Zones 2 through 8.

Growing and Care

Amber Jubilee Ninebark is an easy-to-grow and versatile shrub that is well-suited for a variety of landscapes.

• Sunlight: For the best and most vibrant foliage color, plant it in full sun (at least 6 hours of direct sunlight per day). It can tolerate partial shade, but the foliage color may not be as intense.
• Soil: This plant is adaptable to a wide range of soil types, including clay and rocky soils. However, it thrives best in well-draining soil with medium moisture. It does not tolerate overly wet or waterlogged soil.
• Watering: Water newly planted shrubs regularly to help them establish a strong root system. Once established, they are quite drought-tolerant and can handle dry spells, though they will perform better with occasional watering during extended periods of drought.
• Pruning: Amber Jubilee Ninebark generally requires minimal pruning to maintain its shape. It looks best in its natural form. If you need to prune for size or to rejuvenate the plant, do so in late winter or early spring before new growth begins. You can also prune after flowering, but no later than mid-August. You can remove up to one-third of the oldest stems at the base to encourage new growth.
• Fertilizer: Fertilizing is usually not necessary in good soil. If your soil is poor, you can apply a balanced, slow-release fertilizer in the spring.
• Pests and Diseases: This shrub is generally pest and disease resistant. However, it can be susceptible to powdery mildew in hot, humid climates. Planting it in a location with good air circulation can help prevent this fungal issue.