Seaweed is a highly nutritious and natural fertilizer for the cannabis plant. It is packed with beneficial nutrients and vital minerals that ensure maximum health, vitality, growth, and high yields. Seaweed extracts are especially beneficial for your cannabis plants as they protect them from defects that can ruin their health, thereby providing you with bigger, stronger, and well-developed plants. For instance, Kelp, an algae seaweed, possesses more than 60 trace elements that boost the health of your cannabis plants and improves their tolerance to pests, diseases, and stress!

Advantages Of Using Seaweed Extract For Cannabis Growth

Many types of seaweed have been used in agricultural systems around the world for centuries. Fresh weed contains large and small plant nutrients and minerals absorbed from the ocean. These include minerals such as sulfur, magnesium, boron and calcium. 

When incorporated into the ground and in the diet, seaweed may also contain beneficial vitamins such as A, C, B12, K, and E. The weed also contains substances that control plant growth, which contributes to the rapid and explosive growth of your weed plant.

Use seaweed for cannabis growth to help retain soil moisture and reduce the amount of water your plants need. In addition, when used for mulching, liquid seaweed can reduce or eliminate the need to clear your garden and act as a barrier to the formation of invasive plants.

The weed also produces compounds that act against certain fungi, viruses, and bacteria. Thus, they act like "medicine" for the cannabis plant. In addition to fighting the bad bacteria, the seaweed helps to stabilize the soil and promote the growth of beneficial bacteria.

Kelp: A Nutritional Power

Kelp is a type of algae seaweed that is exceptionally nutritious. There are about 23 different varieties of Kelp grown around the world. They form underwater kelp forests and grow in shallow, nutritious water. It is this environment that makes Kelp so effective for cannabis and other plants. The weed absorbs large numbers of marine minerals that dissolve in the soil when added as compost.

Kelp is capable of meeting most of the nutritional needs of the cannabis plant. In total, it contains more than 60 trace elements necessary for the growth of the herb. These include iron, manganese, cobalt, zinc, and molybdenum. Many of these minerals are essential micronutrients for cannabis. Although only needed in small quantities, they perform important physiological processes.

For example, iron is essential for energy production and the formation of the green pigment chlorophyll. In addition, plants use micronutrient manganese during photosynthesis, respiration, and nitrogen synthesis. Kelp is an excellent source of organic nutrients that fuel these processes.

Kelp provides more than just nutrients. Seaweeds also help to stimulate beneficial microorganisms in the soil. They form synergistic relationships with plants. In exchange for sugar emissions, they break down organic matter and help their plant counterparts access vital nutrients.

Kelp helps control the pH of the soil, which is essential during cannabis cultivation. Cannabis needs a soil pH between 6 and 7 to grow properly. If the pH fluctuates above or below this pleasant spot, the roots will not take in nutrients effectively. Kelp's broad beneficial molecules help cannabis plants during the germination process and allow them to form sturdy and strong stems and branches.

Different Forms Of Kelp

There're many Kelp forms. Growers can add liquid seaweed extract to their cannabis. Pour around two teaspoons of seaweed extract in five liters of water. Liquid Kelp also boosts the presence of growth hormones that promote the growth of healthy roots.

Kelp food is the second form of supplement. Add 0.5 kg / 9 m2 to the soil. It takes four months for nutrients to be released into the soil, so add this well before the outdoor growing season begins.

Finally, kelp powder can be used as a foliar spray because the nutrients are available for direct absorption. Add half a teaspoon of powder in 5 liters of water and spray!


Seaweed For Your Garden

If you live next to the sea, the easiest way to get the weed is to find it yourself. It eliminates any price and is a perfect opportunity to immerse yourself in nature for a while.

Before you do so, research the area where you plan to explore. It is not advisable to take the seaweed from a contaminated area as it may introduce unpleasant substances to your garden. In addition, it's good to check if there are any restrictions that prohibit the taking of seaweed from the local environment.

If the weeds are in an open place, go to the beach with a bag and collect a pound. Use an ethnic guide to identify what you are taking.

Once harvested, go home and wash your grace. Next, it is time to decide what to do with it.


Mulching your cannabis plants with seaweeds is straightforward and easy. All you need to do is lay the seaweed directly and evenly on your soil and let nature take its course. 

Note that seaweed is highly beneficial when used to mulch your crops. It enhances your plants' moisture retention and improves the health and nutrition of your soil while keeping off fungus and pests. 


Considering all the nutritional benefits, it is clear that seaweed will make a great addition to any other varieties of a compost pile. However, do not forget to mix and match the weeds well with the remaining ingredients for even distribution and allow adequate airflow.

Liquid Fertilizer

Liquid fertilizer is very easy to make and very easy to use. It may also be highly concentrated, so less should be used. Since seaweed breaks down easily, all you need to do is collect your seaweed and any other compost pile into a barrel with some water and allow it to rest for a few months until it breaks down and becomes a liquid. 

Remember, liquid seaweed extract will help in the growth of cannabis plants. You can use it on the soil before planting your crops or as a fertilizer spray to protect your plants against diseases and cannabis invaders after germination. 

Bottom Line

You don't have to live far deep in the mainland for your marijuana to thrive. With seaweed being a cannabis superfood, you can always get your expected yield at the end of the season. Once you realize the benefits of seaweed, you will no longer worry about the harvest. Feed your cannabis with seaweed, marijuana's superfood, as much as you can.