The Silver Leaf Willow (Salix alba var. sericea or Salix alba ‘Sericea’) is a beautiful deciduous tree known for its shimmering, silvery foliage. It’s a cultivar or variation of the White Willow (Salix alba), native to Europe and parts of Asia, but widely grown in North America and elsewhere for ornamental purposes.
Key Features:
- Leaves: Long, narrow, and finely serrated with silvery undersides or a consistent silver-gray hue from fine hairs on both sides.
- Height: Can grow up to 50–70 feet tall.
- Shape: Typically has a graceful, upright or weeping form with spreading branches.
- Growth rate: Fast-growing tree.
- Bark: Grayish-brown and furrowed with age.
Growing Conditions:
- Light: Full sun to partial shade.
- Soil: Moist, well-drained soil; tolerates clay or sandy soils. Prefers areas with consistent moisture (often found near rivers or ponds).
- Water: Thrives in moist conditions but can tolerate short dry periods once established.
- Hardiness zones: USDA zones 4–9.
Uses:
- Ornamental landscape tree, especially for adding texture and color contrast.
- Used in erosion control due to its strong root system.
- Historically, willow bark (including from Salix alba) was used medicinally for its salicin content (a natural form of aspirin).
Considerations:
- Because of its fast growth and large size, it needs space to thrive.
- Roots can be invasive, so avoid planting near septic systems, sidewalks, or foundations.
- Prone to some pests and diseases like willow blight or cankers, so some maintenance is required.