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Fertigation | What is fertigation? | GrowHigher

What is Fertigation?

Fertigation is the process of irrigating plants with fertilized water, and is a popular way to help cannabis plants grow strong. When marijuana plants get the nutrients they need from water (as opposed to having to pull nutrients out of the soil), it can be easier for them to get exactly what they need. 

Cannabis Fertigation Frequency

Some growers prefer to water their marijuana plants a few times per day with water infused with nutrients, while others prefer to allow nutrient-dense water to constantly flow through the plant’s soil using a drip irrigation system. Both methods can work well, and it’s key to pay close attention to your plants to recognize what type of watering method is the best fit for their unique needs. 

High-Frequency Fertigation

High-frequency fertigation can be a smart way to keep your plants on a constant schedule of high-nutrient watering. This type of watering involves setting up a reservoir that contains high-nutrient water. The water then flows through a pump and directly into the soil of each plant. 

It’s key that your plants are able to drain water well, especially when you’re beginning the process of testing out high-frequency fertigation. Even the most nutrient-dense water is capable of causing root rot if the soil in your pots becomes waterlogged. 

As long as your plants are set up in a way where proper drainage allows unused water to flow out of the pot freely, it’s likely that they’ll thrive with high-frequency fertigation. This means that roots are getting both plenty of nutrients and plenty of oxygen. 

Many growers find that using high-frequency fertigation produces fast-growth results similar to hydroponic growth methods. 

Cannabis Fertigation Tips

If you’re thinking about starting fertigation for your cannabis plants, it’s key that you keep a few tips in mind to maximize growth. 

Setting up an automatic watering system allows growers to tend to more plants at once, without having to worry about watering plants on a schedule. 

Don’t start fertigation until your plants have at least a few leaves, as it’s easy to overwater seedlings and ruin your plants before they have the chance to get started right. Once you start fertigation, you’ll need to stick with it. Your plants need consistent nutrient levels to thrive, and alternating fertigation water with plain water doesn’t usually produce great results. 

It’s important that you pay close attention to your plants after you start the fertigation process. If you notice that the leaves of your plants are beginning to droop, there’s a good chance they’re receiving too much water. You’ll want to play around with watering your plants less often or providing less fertigated water at each watering, paying close attention to how your plants respond to changes in their watering schedule. 

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