From the perspective of the Greek oregano plant (*Origanum vulgare* subsp. *hirtum*), our watering needs are dictated by our Mediterranean heritage. We thrive in conditions that mimic our native hillsides: abundant sunshine, excellent drainage, and infrequent but thorough watering. Our succulent, hairy leaves are specifically adapted to store water and minimize evaporation. Understanding this core aspect of our biology is the key to keeping us healthy and flavorful, whether we reside on a sunny windowsill or in an outdoor garden bed.
Our fundamental requirement is never to have constantly wet feet (roots). The single most effective way to achieve this is through the "soak and dry" method. This means you should water us deeply and thoroughly until water flows freely from the drainage holes, ensuring the entire root zone is moistened. Then, you must allow the soil to dry out significantly before even considering the next watering. This cycle of drought between waterings encourages our roots to grow strong and deep as they search for moisture, which in turn builds a more resilient and robust plant. It also perfectly mimics the natural precipitation patterns of our homeland.
When living indoors in a container, our world is limited to the soil within that pot. The frequency of watering is not based on a calendar but on the condition of the soil. The golden rule is to insert your finger into the soil up to the first knuckle (about 1-2 inches deep). If the soil at that depth feels completely dry, it is time for a thorough soak. If it feels even slightly cool or moist, wait. Depending on factors like pot size, material (terracotta dries out faster than plastic), indoor temperature, and sunlight exposure, this could mean watering every 7 to 14 days. In winter, when our growth slows and light levels are lower, we will require much less frequent watering, perhaps only once every three to four weeks.
Once established in an outdoor garden bed, we become remarkably self-sufficient. The key phrase is "once established," which typically means after the first full growing season. For newly planted oregano, regular watering is needed to help our root system settle into its new home. Water every few days for the first couple of weeks, then gradually extend the time between waterings. A mature, established outdoor oregano plant is highly drought-tolerant. We will primarily rely on natural rainfall. During extended periods of hot, dry weather without rain, a deep, supplemental watering every 10 to 14 days is more than sufficient. Our leaves are designed to handle the heat.
Please learn to read our signals. The most common and dangerous mistake is overwatering. Its symptoms include yellowing leaves, a wilted or mushy appearance despite wet soil, and a general lack of vigor. This condition leads to root rot, a fungal disease that attacks our suffocated roots and is often fatal. Underwatering is less critical for a resilient plant like us but still stunts growth. Signs include dry, crispy, brown leaves and extremely brittle stems. However, a quick soak will usually perk us right up. It is always safer to err on the side of underwatering than overwatering.
