Classification of cultivars and hybrids based on the time interval from seedling emergence to technical maturity of the head, ranging from 35 to 90 days.
In the reference
47
varieties
crop Napa cabbage,
where this is mentioned in the description.
For Chinese cabbage, maturity groups are divided into early (35–55 days), mid-season (55–60 days), and late (60–90 days). Measuring this period is critical for this crop, which is a long-day plant, as high temperatures and prolonged light exposure trigger premature bolting.
The selection of a maturity group determines the cultivation strategy: early hybrids are suitable for spring production, while late-maturing ones are used for the summer-autumn cycle. Late-maturing forms are characterized by higher dry matter and sugar content and better storability, whereas early varieties are more prone to intensive nitrate accumulation.
General information about the subject — on the page
Maturity group.
Varieties of Napa cabbage mentioned in the description
Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.