Wow. What a tough question! Tibouchina ( Glory Bush of Brazil) is native to my area. However our climate is very different from yours. First you have to get a plant, however. I would try 2 methods. First take some tip cuttings when it is just beginning to grow, in Morocco probably winter would be the best time to do this. Alternatively it is relatively easy, though slow, to grow from seed. Soak the ripe seed overnight in water then place in a sandy compost in a propagator, maintain an even, fairly low temperature (15-20 deg C) and high humidity. In 30 days you should have seedlings. Keep them very cool and well shaded for at least a year. They will reach flowering size in about 3. When choosing your final site I would choose a spot with some shade. Although temperatures in this part of Brazil are similar to Morocco, it is a lot wetter, more humid and especially in summer, a lot cloudier. Tibouchinas grow in forested areas so don't need full sun to flower.