Jacaranda trees are possibly the most beautiful trees for residential areas. I used to leave in South Africa in a street lined with jacarandas. Only disadvantage streets need to be cleaned often and if the flowers drop on a parked car they can stain the paint.
Grafton NSW. And Casino. Also heaps in Brisbane. The curse of University of Queensland students, Jacaranda flowers means exams time. All through the city and the riverbank.
They send chemical cues and flower en masse but with temperature changes are also note breathing flowers out of season with leaves, worrisome.
I tortured one of those mexican creatures some years ago. Is a very beautiful, but frustrating plant able to stand more cold than expected, but decicuous in this case.
Each plant has its secrets. Have I mentioned that they smell like piss when dropping the leaves? Yup, Jacaranda trees reek in winter if the area is beyond their normal distribution and they sense any cold. Die to the ground and then resprout.
Apart of this, beautifull feathered foliage and even more beautiful flowers in a big tree with elm-like bark and nice hot-cake shaped fruits.