Laburnum anagyroides during May and June. "Laburnum anagyroides" blooms in late spring with pea-like, yellow flowers densely packed in pendulous racemes 10–25 cm (4–10 in) long. The flowers are golden yellow, sweet scented, and typically bloom in May. The seeds are legumes with large numbers of black seeds that contain cytisine, an alkaloid extremely poisonous to humans as well as goats and horses, especially when not ripe. However, some wild animals such as hares and deer can feed on them without any problems, and because of this the plant is believed to have magic properties in some regions. All parts of the
Laburnum alpinum of this plant are highly poisonous and should not be eaten or used internally. It is native to Central and Southern Europe and has naturalized in Scotland. "L. alpinium" and "L. anagyroides" Medic. both are common as a garden escape in Northern Ireland. "Laburnum alpinum" is cultivated as an ornamental tree. Plants can be successfully transplanted even when quite large. The most common ornamental Laburnum plant is a hybrid of this species and "Laburnum anagyroides", Laburnum × watereri. The plant prefers well-drained, light (sandy), medium (loamy) soil but tolerates heavy clay and nutritionally poor soils. Preferring acid, neutral and basic