Cultivating pine trees from seeds may seem like a simple undertaking at first, but the length of the process surprises many. Even the decisions made before sowing can determine the type of plant we will end up with for years. Pines react slowly to any cultivation errors, so a wrong decision can set back their development for years. Before we start sowing, it is essential to understand the factors that determine our success from the moment of germination. The germination time of pine species generally ranges between 10-30 days if they undergo cold treatment, i.e., stratification. For example, the seeds of Scots pine (Pinus sylvestris) and Norway spruce (Picea abies) require 21-30 days of cold treatment, while the germination of Douglas fir (Pseudotsuga menziesii) can be faster than this, given adequate moisture. In the first year, seedlings typically grow 3-10 cm, and it usually takes 2-3 years for them to become suitable for transplanting or planting out. The entire cycle of ...