Seedlings that do not grow well produce no flowers.
To make cabbage produce flowers, plants that have reached a certain size need to be exposed to low temperatures for a while. Therefore, if the conditions necessary for producing flowers are not met because of delayed planting, even though a head is formed, bolting and flowering will not occur. Adjust the planting time according to the purpose.
※According to variety of the cabbage, the number of leaves and the needed temperatures change.
By being raised steadily and exposed to coldness, the plants prepare for a floral bud even in a firm head. In some cases, as spring approaches, a seedling produces a floral bud inside. If the characteristics of forming a head are genetically maintained, seeds can be saved from plants with a firm head and from plants that produce flowers without forming a head due to when they were planted.