When to remove the straw rope from the trunk of a newly planted Magnolia tree? Does summer rope have an effect on survival?

At this time, you must not remove the grass rope tied to the trunk of the newly planted Magnolia tree, otherwise it will seriously affect its survival rate. The Magnolia magnolia tree planted in early spring, although it has grown thick leaves from July to August, does not mean that it has completely survived. In a sense, it is still a "fake life", and it must continue to be patiently and carefully managed. Only after the leaves have fallen in November can it be proved that it has fully survived. If you hastily untie the rope in summer, although the trunk is fresh and beautiful, because the trunk bark bound in the grass rope is suddenly exposed to the hot sun, strong light and high temperature in summer, the temperature on the surface of the bark will increase by more than 10-15 ℃ than when it is wrapped around the rope. Coupled with direct exposure to the hot sun, the relative air temperature on the bark surface is bound to drop suddenly, high temperature, dryness and strong light will seriously hurt the bark. In addition to causing a large area of bark injury, it is likely to endanger the safety of Magnolia plants in summer. This phenomenon of the death of transplanted trees caused by the premature release of ropes is common in urban greening and tree planting, so we must not act in haste for the freshness of the trunk.