When to Feed Your Cannabis Plants

We all know that cannabis plants need food to grow, but when is the best time to feed them? Here are some tips to help you figure out when to feed your cannabis plants.

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The vegetative stage

The vegetative stage of a cannabis plant’s life cycle is when it is growing and developing its leaves and stems. This is the stage when the plant is gathering energy and nutrients to prepare for the flowering stage. The vegetative stage can last for several weeks or months, depending on the type of cannabis plant.


Cannabis plants need a lot of light during the vegetative stage in order to grow strong and healthy. The best way to provide them with light is to use grow lights. Grow lights come in different types, such as fluorescent, metal halide, and LED. Each type has its own advantages and disadvantages.

Fluorescent grow lights are the most affordable type of grow light, but they are also the least powerful. Metal halide grow lights are more expensive than fluorescent grow lights, but they produce more light per watt. LED grow lights are the most expensive type of grow light, but they are also the most efficient.

No matter what type of grow light you use, make sure to provide your plants with at least 18 hours of light per day during the vegetative stage.


Cannabis plants love water, especially during their vegetative stage. They will drink up anything you give them, but they appreciate a good, clean source of water the most. Stick to bottled water or filtered water if your tap water is not great. If you’re using well water, make sure it’s tested for nutrients and pH levels before using it on your cannabis plants.

You should water your cannabis plants every day or every other day, depending on how hot and dry it is. The soil should be moist but not soggy, and the best way to achieve this is to use the finger test. Stick your finger about an inch into the soil; if it’s moist, you don’t need to water yet. If the soil is dry, it’s time to give your plant a drink.

Temperature and humidity

To have a healthy and productive cannabis grow, you need to provide the ideal temperature and humidity for your plants. The vegetative stage is when your plants are growing leaves and stems, and this is the stage when they are most sensitive to changes in temperature and humidity.

You should aim to keep the temperature in your grow room between 70-80 degrees Fahrenheit (21-27 degrees Celsius) during the day, and 60-70 degrees Fahrenheit (15-21 degrees Celsius) at night. The best way to maintain these temperatures is to use a thermostat-controlled fan or air conditioner.

The humidity in your grow room should be kept between 40-60% during the vegetative stage. If the humidity is too low, your plants will start to experience stress and may stop growing. If the humidity is too high, your plants will be more susceptible to mold and mildew. The best way to control the humidity in your grow room is by using a humidifier or dehumidifier.

To ensure that your plants are getting enough ventilation, you should also install an exhaust fan in your grow room. This will help to remove any excess heat or humidity from the room and keep your plants healthy.

The flowering stage

When your cannabis plants have entered the flowering stage, they will need to be fed more heavily than in the vegetative stage. The flowering stage is when your plants produce buds, so you will want to give them the nutrients they need to produce healthy buds. You should also start reducing the amount of water you give your plants during the flowering stage.


Now that your plants have reached their flowering stage, it’s time to give them a little extra attention. Flowering is when your plant starts developing its buds, and it’s the most important time to make sure they are getting the nutrients they need.

When to Feed Your Cannabis Plants
You should start feeding your plants more nitrogen-rich fertilizers during the early flowering stage. This will help encourage growth and produce bigger buds. As your plants enter the later flowering stage, you should start cutting back on nitrogen and increasing the amount of phosphorus and potassium. This will help promote flowering and ripening of the buds.

If you are growing cannabis indoors, you will need to provide a dark period of 12 hours or more of uninterrupted darkness each day in order for your plants to enter the flowering stage. Outdoor plants will begin flowering when the days start getting shorter in the fall.

Once your plants have started flowering, they will need about twice as much light as they did during vegetative growth. Flowering plants also benefit from a boost in temperature, so if you can, try to raise the temperature in your grow room by a few degrees.


It’s best to water your cannabis plants with plain water that’s pH’d between 6.0 and 7.0 during the vegetative stage. Most commercial growing operations use reverse osmosis water, which has been stripped of all dissolved minerals. This “dead” water must then have the proper pH and dissolved minerals added back in, a process called “recirculating nutrient solution” or “re-circulating NFT.”

Cannabis plants love lots of water during the vegetative stage, especially when they are growing quickly. Young plants with small root systems will need to be watered more frequently than older plants with larger root systems. As a general rule of thumb, it’s best to keep the soil moist but not soggy — you should be able to stick your finger into the soil an inch or two and feel moisture, but not see any standing water in the bottom of the pot.

Temperature and humidity

Unfortunately, there is no easy answer when it comes to the ideal temperature and humidity for cannabis plants during the flowering stage. The truth is that it will vary depending on the strain you are growing, as well as the climate you live in.

In general, however, you should try to keep the temperature between 70 and 85 degrees Fahrenheit, with a RH (relative humidity) of 40-50%. If possible, it is also a good idea to use a dehumidifier during this stage, as too much moisture can lead to problems like mold and mildew.

Of course, it is also important to make sure that your plants have enough ventilation, as this will help to regulate the temperature and humidity levels. In addition, be sure to check your plants regularly during this stage, as they can be susceptible to stressors like heat and light. If you notice any problems, try to address them immediately.

The ripening stage

As your cannabis plants enter the final stage of their life cycle, they will begin to ripen. This is when the cannabinoids in the plants begin to convert into THC and CBD. The THC and CBD levels will peak about 2 weeks before harvest. During this time, you will want to stop feeding your plants nutrients and allow them to dry out.


Light is one of the key environmental factors that affect plant development. The spectrum, duration, and intensity of light influence the growth and development of plants. Light also affects the production of plant hormones that determine such things as internode spacing and leaf orientation on the stem. All these factors impact the rate of photosynthesis, which is the process that produces the energy cannabis plants need to grow.


One of the most important things you can do during the ripening stage is water your plants properly. Cannabis plants love water, but they also love air. You don’t want to overwater your plants and cause them to rot, so be sure to check the soil before you water. The soil should be dry to the touch before you water again. Also, be sure to check the leaves of your plants. If they are starting to turn yellow, that’s a sign that they are getting too much water.

Temperature and humidity

As your plants begin to mature, they will enter what is known as the ripening stage. This is when the THC levels in the buds begin to peak, and when you need to start paying close attention to the temperature and humidity in your grow room.

The ideal temperature for ripening cannabis plants is between 70-80°F (21-27°C), with a humidity level of 50-60%. If the temperature gets too high, it can cause the buds to become airy and lose their potency. If it gets too low, the buds may not mature properly and may not be as potent.

You will also need to pay close attention to the amount of ventilation in your grow room during this stage. Too much ventilation can cause the humidity level to drop too low, which can be just as detrimental to your plants as high humidity. The best way to regulate both temperature and humidity is by using an air conditioner and a humidifier (or dehumidifier) in your grow room.

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