The water regime of indoor plants during dormancy
Indoor plants usually require a significant reduction in watering in the winter. Along with shortening daylight hours and lowering the temperature, the plants need less moisture. If you keep watering the same as during the growing season, the soil at a lower temperature will begin to sour. With reduced growth activity, root decay is also possible.
How to determine the need for watering?
Usually, the need for watering is determined by the state of the topsoil. Wet ground sticks to fingers. If this happens, then watering is not yet required. You can check the condition of the soil deep in the ceramic pot by sound. The wetter the soil, the more muffled the sound the pot makes when you lightly tap it.
The most “dry” mode in the winter months is preferred by cacti. They are watered no more than once every three to four weeks, and some species normally spend the whole winter without watering at all. Deciduous plants are watered on the third or fourth day after the topsoil has dried.
Many gardeners make the mistake of watering plants sparingly, but very often. In this case, the water simply does not reach the bottom of the pot and the roots remain dry. It is better to drain excess water from the pan after heavy watering than to arrange a “drought” in the lower part of the roots.
Many tropical plants require high humidity. They must be sprayed in the morning and evening, while also reducing the frequency of watering.
Water for irrigation should have a temperature slightly above room temperature, since cold water is poorly absorbed by the root system. The usual regime of watering resumes gradually along with the beginning of active plant growth in spring.
Exceptions to the Rules
The recommendations for reducing irrigation are valid only if the plants are at rest under appropriate conditions, that is, at low temperature and less light. If the temperature remains high all winter, then the usual watering regime is maintained.
Another exception concerns plants blooming during the winter months. They also need regular watering.