Kiowa
ActiveRubus idaeus L. x Rubus subg. Eubatus Focke
Variety traits
Frost resistance — Rubus idaeus L. x Rubus subg. Eubatus Focke
Rubus idaeus L. x Rubus subg. Eubatus Focke
The trait is characterized by insufficient stem resistance to low temperatures, which requires removing canes from trellises and winter covering in most CIS regions.
In the reference 5 varieties crop Rubus idaeus L. x Rubus subg. Eubatus Focke, where this is mentioned in the description.
To evaluate the frost resistance of raspberry-blackberry hybrids, a method of artificial freezing of canes at –20 °C and –30 °C is used, followed by an analysis of fruit bud mortality. Under field conditions, winter hardiness is assessed using a scoring scale, where values can range from 0.5 to 2.3 points.
Most hybrids possess low winter hardiness, with the temperature limit for certain cultivars, such as Boysenberry, being approximately –25 °C. The success of the crop depends on the bush's recovery ability after damage, which is pronounced in cultivars such as Black Satin, Gazda, Thornfree, and Loganberry Thornless.
General information about the subject — on the page Frost hardiness.
Varieties of Rubus idaeus L. x Rubus subg. Eubatus Focke 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.
Navaho
ActiveRubus idaeus L. x Rubus subg. Eubatus Focke