Variety traits
Hosta Tratt.
The winter hardiness of Hosta is determined by its ability to withstand winter temperatures according to USDA zones and the requirement for a dormancy period at temperatures below +4 °C for a successful biological cycle.
In the reference 7 varieties crop Hosta, where this is mentioned in the description.
There is no standardized winter hardiness scoring scale for Hosta; therefore, when evaluating cultivars, reference is made to their classification within specific USDA hardiness zones. An important aspect of winter hardiness is the genetically determined requirement for a chilling period, consisting of several weeks at temperatures below +4 °C. Failure to meet this requirement in warm climates leads to weakened spring regrowth and plant degradation throughout the season.
The survival of Hosta rhizomes and renewal buds during winter depends on resistance to a complex of adverse factors. Key risks include damage to early shoots from recurrent spring frosts, rotting or decay of the root system due to excessive moisture and poor drainage, and exposure to critical frosts in regions with unstable snow cover, which necessitates additional mulching.
General information about the subject — on the page Winter hardiness.
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.
Hosta Tratt. · Hosta
Alieksieienko Oksana Volodymyrivna, Vol`s`ka IUliana Oleksandrivna,
Hosta Tratt. · Hosta