We have a 50 year old apple tree and two 5 year old espaliered pear/ nashi trees on our property.
The beginning of summer has been alternating between sunny with rainy days so everything in our garden is growing vigorously.
The pip fruit trees have all put up "runners" - large amounts of long thin branches coming off existing branches at right angles.
Is it okay to prune these runners back at this time of the year?
I'm in Nelson, New Zealand so we're currently at the beginning of summer. Historical weather data is below: