6 tropical flowers that are seen everywhere in the south, yet northern gardening enthusiasts have never seen

Have you noticed which plants are found everywhere in the south but are hard to find in the north? Let's search them out together below. The characteristic of tropical flowers is that their colors are rather vivid, and they bloom very profusely; some can even bloom in all four seasons, and their branches and leaves look tropical. Do you recognize all of the ones below?
1. Bird of paradise (Strelitzia reginae)
It has long, wide, glossy leaves, and the plant stands upright. It is suitable for planting in warm, humid places, kept in loose, fertile, well-drained, slightly acidic soil. To bloom, it needs fairly ample light, plus relatively high ambient humidity. Grown indoors, it serves as a potted foliage plant and looks tropical.
2. Bottlebrush (Callistemon)
It is also called bottlebrush flower, and people also call it bottlebrush flower; it looks like a brush, with bright red flowers hanging in strings on the tree. It is a shrub or tree that can bloom year-round. Its care requires a warm, humid environment, and it needs ample sunlight to bloom often.
3. Chenille plant (Acalypha hispida)
The chenille plant is an evergreen shrub with a climbing effect. If it can be kept warm and humid year-round with fairly ample sunlight, it can bloom in all four seasons, with red tail-like flowers that look especially charming.
For care, use fertile, loose, slightly acidic humus soil; it needs ample sunlight and light, frequent fertilizing, and a certain level of ambient humidity.
4. Ti plant (Cordyline fruticosa)
The ti plant is a common tropical colorful foliage plant that can be grown in pots or in the ground. It likes a warm, humid environment; when sunlight is ample, its leaf color becomes even more brilliant. It likes well-drained soil and has fairly strong adaptability to flower stems. In spring and summer it can produce spike-like flowers, though they are not as attractive as the leaves.
5. Ixora (Ixora chinensis)
Ixora is a common tropical flowering small shrub. Its care requires a warm, moist environment and ample light; by keeping a relatively high temperature year-round, it can keep blooming in all four seasons. For care it needs loose, well-drained, slightly acidic sandy soil, and waterlogging should be avoided.
6. Firecracker flower (Pyrostegia venusta)
Planted in the ground, firecracker flower can grow into a large patch; of course, pot cultivation is also possible, though you should be sure to choose a larger pot, since they grow very fast! Firecracker flower likes sunny environments and fertile, moist, acidic soil, and grows rapidly. The flowers are orange-yellow in strings, and when they bloom they look like firecrackers.