Open main menu. Jacaranda mimosifolia is a sub-tropical tree native to south-central South America that has been widely planted elsewhere because of its beautiful and long-lasting blue flowers.It is also known as jacaranda, blue jacaranda, black poui, or as the fern tree.pen main menu. Jacaranda mimosifolia is a sub-tropical tree native to south-central South America that has been widely planted elsewhere because of its beautiful and long-lasting blue flowers.