Seedlings grow better under light‌. Light plays an important role in the growth of seedlings. Appropriate sunlight can promote the healthy growth and development of seedlings. Ultraviolet rays in sunlight can kill some bacteria and viruses and play a role in disease prevention‌1. In addition, light can promote photosynthesis of seedlings, increase chlorophyll content and accumulation of photosynthetic products, and help the growth and development of seedlings and cell division‌.

However, more light is not always better. In the early stages of growth, the leaves of seedlings are tender and easily damaged by sunlight, so proper shading is required. Seedlings can be placed under a shade net or in an artificial shaded place for seedling cultivation‌1. As the seedlings grow, it is necessary to gradually increase the sunlight exposure time and gradually reduce the degree of shading to help the seedlings adapt to the strong light environment‌1. Avoid direct strong light at noon, because the intensity of sunlight at noon is high and it is easy to cause damage to seedlings‌.

In summary, light is essential for the growth of seedlings, but the light intensity and time need to be reasonably controlled to avoid damage to seedlings caused by excessive exposure.