Watering
/ˈwɔɾɚɪŋ/
Definition
Watering is the horticultural practice of applying water to soil or growing media around plants, or less often directly to plant surfaces, to replace moisture lost through evaporation and transpiration. It differs from rainfall or humidity because it is a controlled action by a grower. In plant care, watering affects root-zone moisture, oxygen availability in the medium, and the plant’s ability to absorb dissolved nutrients.
Use in Gardening
- Root-zone oxygen balance: Too much watering fills air spaces in the potting mix or soil, which limits oxygen around roots and can slow root function, nutrient uptake, and growth.
- Leaf and stem responses: Too little watering reduces cell pressure, called turgor, so leaves and young stems may wilt, curl, or develop dry edges as the plant loses water faster than roots replace it.
- Season and light changes: Needs shift with temperature, day length, light intensity, and active growth. Many plants use water faster in bright, warm conditions and more slowly in cool, low-light periods.
- Method affects disease risk: Applying water to the soil rather than keeping foliage wet can reduce conditions that favor some fungal and bacterial leaf problems, especially where air movement is limited.