It is quite possible for male plants to emerge from the seeds. To prevent unwanted fertilization of the female flowers, you should separate the male plants before the flowering phase begins if possible.

Male plants show small, spherical pollen sacs at their nodes – the places where the leaves grow out of the stem. These are often easily recognizable as small, round buds that develop into inflorescences and later release pollen. Female plants, on the other hand, form small, hair-like pistils, the so-called pistils, at the same nodes. These white hairs are the recognizable sign of female flowers and are used to collect pollen.
You should also get rid of weak plants. These may have yellowed or pale leaves, weak or thin stems, a generally puny appearance or deformed leaves. Weak plants often require more resources and can interfere with the growth of healthy plants by creating competition for light, water and nutrients. In addition, weak plants can be more susceptible to diseases and pests, increasing the risk to the overall crop. By allowing only the most robust and vigorous plants to grow, you create optimal conditions for healthy, vigorous growth and a higher quality harvest.