Iron tree blossoms have strong regional characteristics. Iron trees that grow in the tropics can blossom and bear fruit every year after 10 years. Iron trees have been blooming frequently in the north in recent years because iron trees are mostly cultivated as bonsai. People are very involved in all aspects of cultivating iron trees. Pay attention to everything from seedling cultivation to cultivation techniques to daily care. It is very careful and specific, specific to the selection of high-tech fertilizers, the amount of water used, and so on. Iron trees growing in greenhouses are naturally easy to flower and bear fruit. Moreover, iron trees are gymnosperms When it reaches a certain age, it will naturally bloom, but it will be abnormal if it does not bloom. The text is intended to show:. ['Artificial intervention shortens the flowering period of iron trees in the north.', 'It is normal for iron trees to bloom in the cold north.', 'Regional plants can change their varieties through human power.', 'Flowering time of gymnosperms in the north varies by variety.']