Tree seeds are the foundation of forest tree propagation, and there is more to seed selection and seedling raising than meets the eye

Tree seeds are the organs by which trees reproduce their offspring, usually made up of a seed coat, an embryo, and either endosperm or cotyledons. They are an important starting point for both natural forest regeneration and artificial afforestation, and most conifers and broadleaf trees can be propagated from seed. The quality of the seed directly affects how evenly the seedlings emerge and how well they grow later on.

The seeds of different tree species vary greatly in form; for example, the seeds of pines and maples have wing-like structures that help them spread by wind, while the nuts of the Fagaceae family often rely on animals for dispersal. Many tree seeds have dormant characteristics, and a hard shell or physiological dormancy will prevent them from germinating right away. Before sowing, treatments such as soaking, stratification to promote sprouting, or lightly cracking the shell are often needed to improve the germination rate.

When collecting seeds, choose mother trees that are vigorous and free of pests and diseases, and harvest promptly once the fruit is fully ripe. After the seeds are cleaned of debris and dried in the shade, choose dry storage or moist storage according to their own characteristics. Those with low moisture content that tolerate drying can be stored dry, while fresh seeds that are prone to losing water are better stored moist mixed with sand. During storage, guard against moisture and rodents, and avoid high temperatures that can reduce seed viability.

In terms of uses, besides being used for growing seedlings and afforestation, tree seeds are also an important food source for wild animals in forest areas, which is significant for maintaining the forest ecosystem. If home growers run into unsatisfactory germination, it is mostly related to old seeds, dormancy that has not been broken, or soil covering that is too deep. Choosing fresh seeds and treating them according to the habits of the species will noticeably improve the success rate.