Surround the seeds with an evenly moist growing medium and keep it moist. The seeds germinate after a period specific to the type of seed.
Plant most seeds at three times their diameter. For a pea, this would be about 3/4 inches deep. Poppy seeds are so small they can be sprinkled on the surface and misted with water to press them into the soil.
Most seeds germinate when the soil around them is kept evenly moist. Some seeds do best if the soil dries and becomes moist again.
Seeds germinate as quickly as a few hours or may take years depending on the plant. Seed packets usually have information on germination times.
The process of giving certain seeds a cold period before germination is called stratification. This is the natural process of waiting for winter to end to start growing in the spring.
Some plant seeds require damage to the seed coat before they will grow. Nicking or scuffing the seed coat allows moisture to penetrate. This is called scarification.