Orchids mounted on an avocado branch. From bottom to top is Dendrobium Delicatum 'Rosminah Brown', Oncidium ornithorhynchum (blooming) and Dendrobium speciosum var. hillii 'Don Brown'. All of them are great for outdoor growing.
22 Best Flowers for Full Sun Heat Tolerant Flowers for Containers, Top Tropical Garden Plants, 21 Flower and Plants To Make Tropical Gardens (read the descriptions for mobile users), Outdoor Tropical Plants: Part 1