Seeds should be surface sown in fertile, well-draining loam in full sun. The soil should be deeply tilled. They are best off being direct sown after any danger of frost or sown in trofts outside and transplanted to the ground when about two inches tall. They can also be started indoors for an early start. This also helps prevent them from being carried away by the wind or water. Tabacum is considered a perennial in warmer climates, but can be grown elsewhere as an annual. Thin plants to about two feet apart, and cut off the flowering tops to increase leaf size. Flowering requires 14 hours of daylight to begin. Remove dead flowers to encourage new ones to emerge. Regular fertilization is recommended. Germination typically takes 10-20 days.