1 to 2 years. According to Baidu Encyclopedia, the growth angle of lemon saplings is wrong, and it can be corrected and reshaped by pruning, which takes 1 to 2 years. Branching is a plastic method that artificially changes the growth angle and distribution direction of branches. Branching plays a very important role in cultivating tree skeleton structure, distributing branches reasonably, improving lighting and ventilation conditions, changing branch polarity, adjusting branch power, promoting or inhibiting branch growth, and adjusting the contradiction between fruit tree growth and fruiting.