Köldtimmar
Köldtimmar, a Swedish term, translates to "chill hours" or "cold hours" and refers to the accumulated number of hours that a plant is exposed to temperatures within a specific low range, typically between 0 and 7 degrees Celsius (32 and 45 degrees Fahrenheit). This period is crucial for the proper development and dormancy of many temperate-zone plants, particularly fruit trees and certain perennial flowers.
During winter, many plants require a sufficient period of cold temperatures to break their dormancy. This cold
The specific number of köldtimmar required varies significantly among different plant species and even cultivars. For