Albizia julibrissin (Persian Silk Tree)

The Albizia julibrissin, commonly known as the Persian Silk Tree or 'slaapboom' (sleep tree) in Dutch, is an exotic ornamental tree favored for its delicate, fern-like foliage and vibrant pink silk-like flowers. Its common name 'sleep tree' refers to its unique habit of folding its leaves closed at night or during rainfall.

Originally native to a broad region spanning from Iran (Persia) across Azerbaijan to China and Korea, it was introduced to Europe in the mid-18th century by the Italian nobleman Filippo degli Albizzi, after whom the genus is named. In modern landscaping, it is particularly popular in Mediterranean climates but is increasingly grown in Northern Europe, including the Netherlands, due to its aesthetic appeal and the changing climate.

While the tree occurs naturally in Asia, specimens sold in the Netherlands are typically cultivated in specialized tree nurseries across Europe (such as the Netherlands, Italy, or Spain). The specific merchant shown in the image, Florabomen, is a Dutch-based supplier that specializes in the cultivation and distribution of ornamental trees like this one on a 'stam' (stem/trunk).