The global cannabidiol market size is increasing rapidly. Generally speaking, cannabis is a tough plant, and most strains can tolerate feeding and watering errors to some extent. However, a constant supply of water and nutrients in the wrong concentrations or amounts can cause profound problems that can be damaging - even fatal - to your crop.
Cannabis plants need a lot of water, especially during the flowering phase. In general, you should avoid depriving your plants of water for too long, regardless of the stage of their life cycle, as this can seriously slow down or completely stop their growth. In addition, by depriving your plants of water, you are also depriving them of nutrients, which not only slows their growth but can also cause certain impairments.
Moderation is the key:
However, overwatering is a common mistake among novice growers. Overwatering can cause the overgrowth of pythium (root rot), botrytis (gray rot), and powdery mildew, and trigger nutrient toxicity and anaerobic (oxygen depletion) soil in extreme cases. These problems can be disastrous and are often extremely difficult for novices to remedy.
Most growers agree that the soil should be able to dry out slightly between each application - this reduces the risk of rotting, mold, and nutrient scorch, and can also promote denser root growth. However, the plants should always be watered before the roots start to dry out.
Finding the right balance is crucial, which varies depending on the variety, size, and stage of growth of the plant - as well as other factors such as the choice of substrate.
When should you water cannabis plants?
The ideal time of day to water cannabis plants is the subject of some controversy. Most growers believe cannabis should be watered after dark, but others say watering should occur earlier in the day.
Do we need to water cannabis plants frequently?
First, your plants will need frequent and small amounts of water - up to twice a day when the room temperature is high and relative humidity is low. As your plants grow, they can be fed less frequently with more amounts. Usually, large flowering plants should be fed at least once every 2 to 3 days.
A step-by-step guide to watering cannabis plants:
First, prepare your equipment. You will need a source of water, a pH meter, a pH regulator (which can be any strong acid), nutrients of your choice and a watering can, garden hose, or similar device.
The water should be at room temperature; water that is too hot or too cold can cause shock and seriously disrupt the plants, sometimes even irreparably. The majority of growers agree that water should be left to stand for 24 hours before using it, as this helps determine the pH more accurately.
The pH should be between 6 and 6.5 when the plant is growing in the ground. If using a substrate without soil, this value may be slightly lower (coco prefers a pH between 5.5 and 6). Use a pH reducer as needed, taking care to mix it well. Bad pH can be the cause of nutrient burns and other deficiencies as the roots are unable to effectively assimilate nutrients.