How do you prevent spindly growth of apple trees?

To prevent spindly growth in Apple trees, ensure they receive adequate sunlight by planting them in well-lit areas. Regularly prune to encourage a strong central leader and remove weak or overcrowded branches. Proper watering and fertilization, particularly with a balanced fertilizer in the growing season, also promote healthy, robust growth. Lastly, consider using support systems for young trees to help them grow upright and strong.