An RHS AGM cross between L. alpinum x L. anagyroides. Laburnum x watereri 'Vossii' is a deciduous, tall, spreading tree so it will need plenty of space. Hairy young shoots and showy long racemes of golden-yellow pea like flowers are produced from May to July. This fully hardy tree makes a fine specimen for larger gardens, growing in most free-draining soils. Height and spread: 8m (25'). Laburnum x watereri 'Vossii' is a deciduous, tall, spreading tree so it will need plenty of space. An RHS AGM cross between L. alpinum x L. anagyroides, Laburnum x watereri 'Vossii' is a fast-growing, multi-stemmed tree that produces white flowers in late spring.