They are also called as Mexican Sunflowers due to bright Orange flowers and the shape similarity.
Tithonus are very hardy plants. They prefer full Sunlight and light soil. They can survive drought-like conditions too. They have shallow roots. Do not overwater. They grow tall and due to profuse flowering & weight, might need staking.
Pot Culture: Tithonias can be sown directly into pots. Sow 4-5 seeds in a 12" pot and cover lightly. Sow the seeds 4 mm deep. Water lightly and keep in shade till they germinate in about 8-10 days. Gradually exposed to full sun. Later keep 2-3 healthy seedlings in the pot and discard the rest.
In Ground: To grow in ground, make seedlings first. Once the seedlings are 2-3 weeks old, transplant them into their fixed position in your garden. The spacing between plants should be 50-60 cms. Provide sufficient manure in the ground.
Watering should be done when the soil is dry. Keep it moist. During rains ensure there is no water logging. Feed Bahaar (liquid) fertilizer once in 15 days and later once buds appear feed Maxi grow fertilizer. It will ensure more flowers. Continue once in 7 days till the end of last flowers. To keep the soil enriched, put Biogro (organic manure) once a month.
The Seeds in this packet are of bright Orange variety. The flowering starts from 70-75 days onwards. The plant attains a height of 70 cm.