How to Water Cannabis Plants

Learn how to water your cannabis plants properly to ensure a healthy, productive crop.

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The Basics of Watering Cannabis Plants

Water is essential for the growth of all plants, and cannabis plants are no different. Adequate watering is especially important during the vegetative stage of growth, when the plant is establishing its root system. The roots are responsible for taking up water and nutrients from the soil, so it’s important to make sure they are getting enough.

How Often to Water Cannabis Plants

Cannabis plants are generally pretty good at telling you when they need to be watered. Usually, the first sign that your plant needs water is when the leaves start to droop down. Another good indicator that your plant needs water is if the soil is starting to feel dry to the touch.

How often you need to water your cannabis plants will depend on a few different factors, such as:
-The size of your pot
-The type of soil you’re using
-The stage of growth your plant is in
-The temperature and humidity of your grow room

As a general rule of thumb, cannabis plants need to be watered about once per week. However, you may need to water more or less often depending on the above factors. If you’re not sure how often to water your plants, it’s better to err on the side of too little rather than too much. It’s easier to give your plants more water than it is to try and rescue them from overwatering!

The Different Stages of Plant Growth

The Different Stages of Plant Growth
Cannabis plants have different watering needs during each stage of growth. Cannabis plants go through three main stages of growth: vegetative, flowering, and ripening.

The vegetative stage is when the plant is growing its leaves and roots, and it’s during this stage that the plant needs the most water. The best way to water cannabis plants during the vegetative stage is to water them deeply but less often. This encourages the plant to develop a strong root system that can support the plant during the flowering and ripening stages, when it will need less water.

The flowering stage is when the plant begins to produce flowers (or buds). During this stage, the plant will need less water overall, but you’ll need to be careful not to let the soil dry out completely between waterings.

The ripening stage is when the buds are maturing and getting ready to be harvested. During this stage, the plant will need even less water than during the flowering stage. Again, it’s important not to let the soil dry out completely between waterings.

The Different Ways to Water Cannabis Plants

There are different ways to water cannabis plants, and each has its own set of benefits and drawbacks. The two most common methods are through drip irrigation and hand-watering. Drip irrigation is a more efficient method as it minimizes water and nutrient wastage, but it can be more expensive to set up. Hand-watering is the more traditional method, and while it is not as efficient, it is easier to do.


One of the most popular methods for watering cannabis plants is top-watering. This method is when water is applied to the top of the soil and allowed to seep down through the roots. Top-watering is a great way to water your plants because it allows you to see how much water they are receiving. It also allows the roots to air out, which prevents them from becoming waterlogged.

There are a few things to keep in mind when top-watering your plants. First, make sure that you are using room temperature water. Cold water can shock the roots and damage the plant. Second, be sure to water slowly so that the water has a chance to soak into the soil before running off. Finally, allow the top layer of soil to dry out between watering so that the plant doesn’t become oversaturated.


Bottom watering is a simple method of watering cannabis plants that can be done with any size or type of container. The basic idea is to fill a tub or sink with water and let the plant’s roots soak for a few minutes before draining the water away. This method can be used for both potted and soil-grown plants.

To bottom water, start by filling your tub or sink with lukewarm water. If you’re using a sink, plug the drain so the water doesn’t run out too quickly. Place your plant in the water and let it soak for 15-20 minutes. You’ll know it’s time to remove the plant when the leaves start to droop slightly. Once your plant has had a good soaking, drain the tub or sink and let the plant dry off before putting it back in its pot or growing medium.


Drip irrigation is one of the most efficient ways to water your cannabis plants. Drip systems can be made from scratch or purchased as a complete system. Either way, a basic drip system for cannabis consists of a water source (i.e. reservoir or holding tank), a main water line going from the source to the growspace, an adjustable drip valve, and an emitters (drip line) that delivers water directly to the roots of your plants.

Drip watering systems can be set up on a timer so your plants receive a precise amount of water at regular intervals. This is especially helpful if you’re growing in a hot climate or during the summer when evaporation is high. The main advantage of drip watering is that it minimizes the chances of over or under watering your plants. It also helps reduce the chances of mold and mildew because the leaves stay dry.

The Different Types of Water to Use

Water is a critical element in the growth of cannabis plants. The type of water you use can have an impact on the quality of your plants. Different types of water contain different minerals and chemicals, which can affect the taste, smell, and potency of your cannabis. In this article, we will discuss the different types of water and their impact on cannabis plants.

Tap Water

While many cannabis growers use their municipality’s water supply without incident, it is not without risk. The main concern with using tap water is the possibility of it containing chlorine, fluoride, or other chemicals added by your water treatment facility. These chemicals can damage or even kill your plants.

To avoid this problem, you can either let your water sit out in an open container for 24 hours to allow the chemicals to dissipate, or you can use a reverse osmosis filter to remove them. If you choose the latter option, be sure to get a filter that is specifically designed to remove chlorine and other chemicals from your water.

Distilled Water

When watering cannabis plants, it is important to use the right type of water. Different types of water can have different effects on plants, and some types of water may even be harmful.

One type of water that is often used for watering plants is distilled water. Distilled water is water that has been boiled and then condensed back into a liquid. This process removes all impurities from the water, including minerals, chemicals, and bacteria.

Distilled water is often used for watering because it does not contain any impurities that could harm plants. However, because distilled water does not contain any minerals, it can actually leach minerals out of the soil and into the plant itself. This can cause problems for plants, especially if they are already deficient in minerals.

It is important to dilute distilled water before using it to water plants. A good ratio to use is 1 part distilled water to 2 parts regular tap water. This will help reduce the chance of harming your plants with distilled water.

Filtered Water

Filtered water is any water that has gone through a process to remove impurities. This can be done using a simple filter, like the ones you might use to purify your tap water, or it can be done using more complex filtration systems. Some of the impurities that are typically removed from water during filtration include:


While filtered water is generally safe to use for watering cannabis plants, it’s important to make sure that your filtering system is effective at removing all of the impurities listed above. Otherwise, your plants could end up being exposed to harmful substances that could damage their health.

How to Water Cannabis Plants for Maximum Results

Watering your cannabis plants properly is vital for maximum results. Cannabis plants are susceptible to over-watering and under-watering, so it is important to strike a balance. The best way to water your plants is to water them deeply and less often. This will encourage the roots to grow deep and strong.

The Right Time of Day to Water

The best time of day to water your cannabis plants is in the morning. Watering in the morning allows the leaves to dry off before nightfall, which reduces the chances of your plants developing mold or mildew. Watering in the evening can also cause problems because the leaves will stay wet overnight, which provides an opportunity for mold and mildew to develop.

The Right Temperature of Water

The right water temperature can be the difference between successful and unsuccessful cannabis plants. The water that you use to water your plants should be room temperature or slightly warmer, around 68-72 degrees Fahrenheit.

Cannabis plants are very sensitive to temperature and they can be easily damaged by cold water. When you use cold water on your plants, the roots will absorb the cold water and this can shock the plant which can lead to problems with growth or even death in extreme cases.

It’s important to make sure that you don’t use water that is too hot either. Water that is too hot can damage the roots of the plant and cause problems with growth. If you’re not sure about the temperature of your water, it’s best to err on the side of caution and use cooler water rather than risk damaging your plants.

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