1. Perennial herb, reaching 1.5 meters high. The entire plant is green and hairless, covered in waxy white powder. With tuberous rhizomes. There are many branches on the ground. The corolla is mainly red, with 2-3 staminodes in the outer whorl, bright red; the lip is lanceolate, curved; the capsule is long, oval, green and the flowering and fruit period extends from March to December. It is an ornamental plant commonly used in subtropical and tropical areas. Likes heat and lots of sun, cannot stand the cold. It does not have strict soil requirements and grows best in loose, fertile, well-drained sandy soil. It is also suitable for growing in fertile clay soil. Perennial herbaceous plant. It is native to tropical regions such as tropical America, India and the Malay Peninsula.
2. Sowing
In April and May, suddenlyremove the hard seed coat with a sharp tool, soak the seeds in warm water for a day and night, then sow them in open field, the buds will appear 2-3 weeks after sowing, transplant them once when 2-3 leaves grow and they will flower that year or the following year.
3. Tubers
The propagation of tubers takes place from March to April. Dig up the old rhizomes and cut them into pieces. Keep 2-3 buds on each rhizome with roots, plant them in the soil about 10 cm deep, keep the distance between plants 40-50 cm and water them sufficiently. When the new shoots reach 5-6 leaves, apply after the fertilizer has broken down and they will flower that year.