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H&G Seaweed Extract is an organic supplement obtained from Ascophyllum nodosum seaweed, designed to stimulate plant growth from the root to the aerial part. Ideal for improving health and productivity in cannabis cultivation.

H&G Seaweed Extract, also known as Algen Extract from House & Garden, is a liquid fertilizer made from North Atlantic seaweed, known for its high content of plant hormones, amino acids, proteins, and polysaccharides.
This product is formulated to provide a natural boost to plant metabolism, especially in the early stages of development. Thanks to its cold extraction process, the Seaweed Extract preserves all the active compounds present in fresh seaweed, allowing for more efficient assimilation by the root system.
This fertilizer is rich in both essential macronutrients such as nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), and sulfur (S), as well as essential micronutrients like iron (Fe), zinc (Zn), copper (Cu), and manganese (Mn).
The use of H&G Seaweed Extract promotes greater chlorophyll production, strengthens the plant's cell structure, and improves its resistance to adverse conditions or abiotic stress.
Its action is reflected in a stronger root system, more vigorous growth, and more balanced flowering.
This product is comparable to other biostimulants such as Biobizz's Alg-A-Mic or Cannabiogen's Delta 9, but with the quality and traceability guarantee offered by House Garden Fertilizers.
H&G Seaweed Extract is mainly used during the first two weeks of the growth phase to provide a vigorous boost to plant development. However, it can also be optionally applied during flowering if you want to reinforce overall vitality.
The recommended dose is 1 to 2 ml per liter of water, applied during watering. For more precise dosing, it is recommended to follow the official House & Garden feeding chart.
The product can be combined with other fertilizers without risk of over-fertilization, as it is formulated to integrate into any complete nutritional plan.
Thanks to cold pressing, the beneficial properties of the seaweed are preserved intact, ensuring effective and long-lasting action.
Regular use of H&G Seaweed Extract provides multiple benefits in cannabis cultivation:
It is an excellent option for growers looking for a natural alternative to maximize the vitality and yield of their plants.
H&G Seaweed Extract is a liquid biostimulant of natural origin that acts as a nutritional supplement and plant protector. Its base of Ascophyllum nodosum seaweed, harvested in the cold waters of the Atlantic, makes it a powerful and versatile tool for any type of growing system, whether in soil, coco, or hydroponics. Its formula has been developed and tested in House & Garden's own laboratories to guarantee superior purity and effectiveness.
It is compatible with the entire House Garden Fertilizers catalog and suitable for organic farming in combination with other natural solutions.
At Hydroponics Blanes, your trusted Grow Shop, you will find H&G Seaweed Extract with immediate availability and discreet shipping throughout Spain. We guarantee original House & Garden products at the best price, with professional advice and proven experience in cannabis cultivation. We are a Grow Shop in Spain committed to the success of your crop and the well-being of your plants.
If you are looking for a natural stimulator that strengthens the development of your plants from the root, H&G Seaweed Extract is the perfect choice. Thanks to its marine origin and cold processing, this fertilizer offers an effective solution for growing stronger, healthier, and more resilient plants.
Find it now at Hydroponics Blanes and discover the power of seaweed in your garden.
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