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You'll want to plant seeds about ¼ inch (.64 cm) deep and bury clippings ½ inch (1.3 cm) deep. You should be patient while awaiting your plants to emerge from the ground since seeds often sprout slowly, though indoor planting may see seeds sprout in less time.  You should avoid attempting to use seeds that have been stored long periods of time. As time passes, the chance the seeds will grow decreases.  Strip cuttings of their leaves on the end being planted. Plants usually take 5 to 10 days to sprout from the ground. However, your oregano may take more or less time depending on factors like soil quality, sunlight, and frequency of watering. During the first few months of growth, water your plants regularly to get them started. Once they are established, you can reduce the amount of water. Check whether your plant needs water or not by touching the soil around it. If it feels dry, you should thoroughly water the area. Plants in containers should be treated similarly to outdoor grown oregano. However, when watering, you should douse the plant until you notice water dripping from the drainage holes in the bottom of the container. By trimming or pinching the leaves and ends of your plant, you can encourage the growth of denser leaves. Wait until the plant is about 4 in (10.2 cm) tall, and use a pair of shears or scissors to lightly thin the outer growth.  Trimming also helps prevent excessive stem growth in your plant. This condition, called legginess, will reduce the yield of your crop. Where you trim your plant, you should notice it branch at that point when it continues growing. In turn, these branches will bear more leaves, meaning more oregano for you.  As you trim, you can use the fresh oregano in a recipe, or dry it to use later on. Sick or thin plants can crowd better ones and steal resources, negatively impacting the potential of the healthier plants. Plants that are three or four years old are at the end of the oregano life cycle and will be less productive, making these prime candidates for removal. You may not remember which plants are old and which are young. In this case, you should wait until early spring when you should be able to judge the plant's age by its initial growth. . Weeds can steal valuable nutrients from your oregano, block out the much needed sun, or soak up the water intended for your plants. Try to target weeds when young, as these will be easier to remove at that time. Grasp the weed firmly at its base with firm, steady pressure, and try to pull up as much of the roots as possible. There are many garden tools you might use to assist in your weeding endeavors. A spade or rooting tool could make your weeding less of a chore. Oregano can be used fresh from the garden, though you should wash it first to rinse off dirt, bugs, and bacteria. Allow the washed herb to air dry or pat it dry with a towel. Now it's ready to be used in any recipes that call for fresh oregano. Oregano reaches peak potency right before it blooms. Blooming season is usually in early July, though this may vary depending on the region you live in.

Summary:
Plant your oregano. Water your oregano moderately. Trim your oregano for thicker growth. Remove older plants. Weed around your plants Pick your oregano.