The pests and diseases that blight apple crops can be radically reduced by a long hard winter. The apple trees can take it, but many of the pathogens can not, so I am looking out at the trees in my garden on a very frosty morning feeling hopeful.
I keep a cider making diary and as the years go by I record the weather and the crop yields for the year. Although there is not a clean direct correlation between frost and increased apple production later in the year, there is a relationship between the two.
So, three cheers for Jack Frost who may just be the herald of a good year to come for the apples.