Caesalpinia gilliesii is also known as Erythrostemon gilliesii, Poinciana gilliesii, Yellow Bird of Paradise, Yellow dwarf poinciana, Bird of Paradise Bush, Desert Bird of Paradise, Crimson Threadflower, or the Barba de Chivo. It is part of the Fabaceae family of plants. It is fast-growing and hardy despite its delicate appearance. It grows to about 3m or 10ft.
Caesalpinia gillesii is native to Northern Argentina and Uruguay. The leaves are bipinnate with about 3 to 10 pairs of pinnae. It flowers on racemes almost 20cm or 8in in height. Caesalpinia gillesii flowers are yellow, five petals, but what makes it look unique is the very long are the 10 red stamens flowing out of the flower. It flowers throughout the warm season which could span from late spring through autumn. After flowering, it develops fuzzy seed pods and seeds which or toxic. They usually remain on the branches unless you remove them.
Caesalpinia gillesii is a tropical plant but it is drought tolerant and has adapted to dry conditions. It does not require much water but the full sun. Plant it in well-drained soil. It is deciduous but in warmer climates can remain as an evergreen plant or small tree. This plant was used in traditional medicine especially in the Amazon forest to treat fever, sores, and coughs.
Prune it as necessary for shaping it. It is pest-free and disease-free as well as resistant to deer. Propagate by softwood cuttings or by seed.