How Much Water Per Plant Per Day for Cannabis: A Comprehensive Guide

Growing cannabis can be a daunting task, especially for beginners who are not familiar with the intricacies of the plant. One important aspect of growing cannabis is watering, as it can greatly affect the plant's health and yield. In this article, we will explore how much water per plant per day is ideal for cannabis plants, and the factors that should be taken into consideration when determining water needs.

Factors that Affect Water Needs

The amount of water that a cannabis plant needs depends on various factors, such as the size of the plant, pot size, and environmental factors. Here are some of the key factors that you should keep in mind when determining how much water each plant requires:

1. Plant Size

The size of your plant will largely affect how much water it needs. A larger plant will require more water than a smaller plant, due to the greater amount of foliage and roots that it has. However, it's important to note that over-watering a plant of any size can cause issues like root rot and nutrient deficiencies.

2. Pot Size

The size of your pot will determine your plant's water needs. A plant in a smaller pot will require more frequent watering compared to a plant in a larger pot. This is because the smaller the pot, the less soil there is to hold water, and the more often it will dry out.

3. Environment

The environment that your plant is in will also affect how much water it requires. For example, plants in hot or dry environments will require more water compared to plants in humid environments.

How Much Water per Plant per Day

The general rule of thumb is that cannabis plants require around 1-2 litres of water per day for every square meter of plant canopy. However, this may vary depending on the environmental factors and the size of your plant. Here are some guidelines that can help you determine how much water your cannabis plants need:

1. Soil Moisture

The best way to determine if your plant needs water is to check the soil moisture. You can use a moisture meter or stick your finger into the soil up to your knuckle. If the soil feels dry at this depth, it's time to water. If it's still moist, wait a day or two before checking again. Overwatering can be just as damaging to your plant as underwatering, so make sure not to water more frequently than necessary.

2. Drainage

Good drainage is crucial to prevent root rot and other water-related issues. Ensure that your pots have adequate drainage holes and that the water can flow freely through the soil. If your pots don't have drainage holes, you will need to water your plants more carefully to avoid over-watering.

3. Avoid Watering at Night

It's recommended that you water your cannabis plants during the daytime rather than at night. This is because damp, cool conditions can promote the growth of mold and other diseases that thrive in humid environments. Watering during the daytime allows the leaves to dry before the cooler temperatures of the night arrive.

Conclusion

Watering your cannabis plants correctly is important for their growth and health. As a general rule, each plant requires 1-2 litres of water per day for every square meter of plant canopy, but this may vary depending on various factors. Always check the soil moisture and pay attention to the environment and pot size when determining how much water to give your plants. By following these guidelines, you can ensure that your cannabis plants receive the right amount of water to thrive.