Winter is so cold, why do people want to scrape the bark of fruit trees, so do what?

1 is to promote the growth of these old fruit trees,

2 is to extinguish the various pests and diseases hidden in the fruit tree bark.

Because the skin of old fruit trees are not called rough, most of them have lost their elasticity, which squeezes the conduit and makes the tree prone to premature aging, so scraping the skin is to reduce the pressure of the old skin and renew the bark.

At the same time, because after winter, many fruit tree pests eggs, pupae, larvae, adults and pathogens mycelium, spores, etc. will sneak into the old skin, warped skin, diseased skin and holes in the tree hidden up over winter. And in this season by scraping the bark, you can reduce these overwintering pests and pathogens attached to the tree.