Variety traits

Blackberry Maturity Group

Rubus L. subg. Rubus

A classification trait for blackberries that determines the technical maturity timing of berries relative to standard cultivars. It is used for planning the berry harvest schedule, selecting cultivars suitable for regional climatic conditions, and organizing harvest operations.

In the reference 34 varieties crop Blackberry, where this is mentioned in the description.

The blackberry maturity group is determined by a comparative assessment method based on the calendar dates of the onset of fruiting relative to accepted standards in a specific cultivation zone. Cultivars are categorized from super-early, which begin fruiting in June, to late, which require a long frost-free period for the crop to ripen.

Applying this trait is critical for managing agrotechnical risks: early cultivars are vulnerable to spring frosts, while late ones depend on the onset of autumn cold weather. In variety trials, cultivars of different maturity groups are grouped separately, as their yield and ripening dynamics require a differentiated approach to comparison.

Remontant cultivars represent a distinct category, where fruiting occurs in several stages—both on last year's canes and on current-year canes. For these, the concept of maturity group is complicated by the multi-stage nature of crop formation, which spans both summer and autumn periods.

General information about the subject — on the page Maturity group.

Sources8

Varieties of Blackberry 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.