Leucadendron discolor ‘Pom Pom’ is an evergreen shrub known for its distinctive, spherical flower heads resembling vibrant pom-poms. Its unique appearance and low maintenance make it a popular choice for gardeners.
Understanding Leucadendron discolor ‘Pom Pom’
Leucadendron discolor ‘Pom Pom’ is a cultivar in the Proteaceae family, native to the Western Cape of South Africa. This origin explains its preference for specific growing conditions. It is a male selection of Leucadendron discolor.
The plant grows as an upright, bushy shrub, reaching 5 to 7 feet tall and 4 to 7 feet wide. Its foliage consists of narrow, leathery leaves, often appearing blue-gray and can develop purple tones in cooler weather. The common name “Pom Pom” refers to the colorful bracts surrounding the true, small flowers. These spherical structures emerge in vibrant yellow or cream, transitioning to red or orange tips as they mature, creating a bicolored effect. This color shift occurs from late winter to early spring, providing a long-lasting display.
Optimal Growing Conditions
Leucadendron discolor ‘Pom Pom’ thrives in conditions mimicking its South African habitat. It requires full sun exposure, though it tolerates partial shade. Full sun is crucial for robust growth and optimal bract color.
Well-drained, acidic, sandy soil is essential. This prevents waterlogging and root rot. Leucadendron species are sensitive to phosphorus; therefore, soil should be naturally low in this nutrient or amended to avoid it, as it can be toxic.
During establishment, regular watering encourages a strong root system. Once mature, it becomes highly drought-tolerant, aligning with its Mediterranean climate origins. Deep watering every two to three weeks during extended dry periods in summer can promote growth. The plant is cold hardy in USDA Hardiness Zones 9-11, tolerating temperatures down to approximately 20°F.
Ongoing Care and Maintenance
Specific care practices are needed after establishment. Pruning is best performed lightly after flowering, typically in late spring or early summer. This maintains the plant’s shape, controls its size, and encourages new growth for the next season’s bloom. When pruning, cut back green stems, ensuring at least four sets of leaves remain. Avoid cutting into leafless, woody sections, as these may not regrow.
Fertilizing requires careful attention due to phosphorus sensitivity. Any fertilizer should be specifically formulated for Proteaceae or be very low in phosphorus and potassium. Nitrogen, such as fish emulsion or blood meal, can be beneficial. General-purpose fertilizers containing phosphorus can harm the plant. Fertilization is often unnecessary if soil conditions are suitable.
While generally resistant to pests and diseases, it can be susceptible to root rot in poorly drained soils. Signs of stress, like yellowing leaves, may indicate nutrient imbalances or improper watering. Proper drainage and avoiding overwatering are key preventative measures.
Propagation
Propagation is most commonly achieved through semi-hardwood cuttings. This method allows replication of the parent plant’s exact characteristics.
Optimal time for semi-hardwood cuttings is late spring or early summer. Apply rooting hormone to encourage root development. Place cuttings in a well-draining propagation medium, such as perlite and peat mix, to provide aeration and moisture. While seed propagation is possible, it is less common for cultivars like ‘Pom Pom’ because seeds may not produce identical plants, and the process can be slower.