This is a convenient way to check the state of soil with some tools. There are many tools available, such as bamboo sticks, chopsticks, sticks, etc. Insert them from the edge of the flowerpot into the soil without damaging the roots. After two or three minutes, pull out and observe. If the bottom of the tool is wet, there is no need to water it. If two thirds of them are dry, they need to be watered.
In short, it is judged by weight. Weigh it before you water it; weigh it after you water it once. If conditions permit, it can be weighed, which is more accurate. In a few days, weigh it again. If it's about the same as before, it needs pouring.
This method requires two identical basins to be prepared and an equal amount of matrix to be placed. However, one has orchids, and the other has none. When watering, water together. When judging whether to water again, you can check the state of the soil in the flowerpot without flowers in real time to judge whether to water.
This is the easiest way to look directly at the state of the soil. The soil on the edge of the flowerpot can't hurt the root. If the soil about four or five centimeters deep is dry, it needs watering. It can also be judged by the degree of dryness and wetness at the bottom of the basin.