The 1-2-3 rule is used to water plants based on their size, but we must bear in mind that this rule is a factor that determines the amount of water a plant needs. The rule 1-2-3 says that we have to water small plants such as groundcovers, cacti, and annuals to a depth of 1 foot (water grass to 10 inches). Water medium plants such as shrubs to a depth of 2 feet. Water large plants such as trees to a depth of 3 feet.

There are many factors that influence when determining the amount of water our plants need. Factors such as the type, size, age and general health of the plant all have an influence on the water demand of the plant. In fact, there is no general rule of thumb on how much water you should give your plant.

Plants can only store a certain amount of water. If there is no more space, your plant cannot continue to absorb water. The substrate you choose partially determines the amount of water available to your plant. The water is transported from the roots to the leaves through the stem; This process is called perspiration flow. When the water reaches the leaves, it evaporates to make room for the roots to absorb new, nutrient-rich water. The evaporation of water through the leaves of the plant is stimulated by light, temperature, humidity and fresh air.

There are many factors that affect the demand for water by the plant. The type, size, age, and general health of the plant are all important factors. As a general rule of thumb, water your plants up to 5-10% of the pot's capacity. There are multiple ways to tell when it's time to water your plants. For example, you can use a soil moisture sensor. This sensor can be purchased very cheaply at any garden center.

Another option is to stick a finger in the ground. The top layer of the substrate will dry faster due to contact with air. It is possible to get a better idea of ​​the moisture in the soil a few inches below the surface. If the soil here is dry it is time to water the plants.

It is just as bad to give your plants too much water as it is to give them too little. To avoid supplying excess water, you can use a pot with holes in the bottom. This allows excess water to drain easily.

It is advisable to water your plant until water comes out of the hole in the pot. When you see that the water starts to come out, it means that it has reached the roots and that therefore that amount of water is adequate and sufficient.

For garden plants it is advisable to put water little by little and observe until the earth is wet. At that time we must stop so as to avoid flooding the plant.