Laburnum x watereri 'Vossii'
Golden Chain Tree, Bean Tree
Bloom Time: Late spring
Laburnum x watereri 'Vossii' is a small, broad-crowned deciduous tree with deep green ternate leaves. It produces pea-like, yellow flowers in up to 2 feet (60 cm) long drooping racemes in a profuse and often spectacular late spring bloom.
USDA hardiness zone 5a to 7b: from −20 °F (−28.9 °C) to 10 °F (−12.2 °C).
How to Grow and Care
Choose a growing site that is exposed to full sunlight. The more sunlight, the better the Laburnum will bloom. An exception to this rule is home gardeners who live in USDA zone 8. Laburnums do not tolerate heat well, so gardeners who live in hotter climates should choose a location that gets morning sun but is shaded from direct exposure to hot afternoon sunlight.
Plant your Laburnum in rich, well-drained soil. These trees are small — they average about 20 feet (50 cm) in height — so they can also be grown in containers. If you use a container, make sure it has drainage holes.
Water frequently. These trees thrive in cool, moist soils and grow best in climates with mild, wet summers. Water at least once each week — more often when the weather is hotter than usual.
Fertilize in early spring, before bud break. Use a fertilizer formulated for flowering trees and shrubs and one that has a high acid content. Laburnum thrives in high pH soils. Follow the directions on the package according to the size and age of your Laburnum. See more at How to Grow and Care for Laburnum.
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