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 (alkaline) soils, it can grow in semi-shade (light woodland) or full sun. It can withstand strong winds but not maritime exposure and tolerates atmospheric pollution. The plant is notably susceptible to honey fungus. "Laburnum" has a symbiotic relationship with certain soil bacteria, these bacteria form nodules on the roots and fix atmospheric nitrogen. Some of this nitrogen is utilized by the growing plant but some can also be used by other plants growing nearby. Laburnum alpinum Laburnum alpinum, the Scotch laburnum, Scottish laburnum or alpine laburnum, is a leguminous, ("Leguminosae"), deciduous tree. "Laburnum alpinum" is similar to "Laburnum anagyroides", it