Alga Grow

Alga Grow by Plagron is an organic, algae-based base nutrient formulated for the vegetative growth phase in soil cultivation. With a 4-2-4 NPK ratio, it delivers a balanced nitrogen-forward feed that supports canopy development, leaf production, and root establishment using entirely natural, seaweed-derived inputs.

Certified by Control Union for organic cultivation, Alga Grow contains amino acids, proteins, trace elements, and natural growth compounds from algae that improve soil structure and stimulate beneficial soil microbes. These organic components contribute to long-term soil health and, ultimately, better-tasting end product compared to salt-based alternatives.

Use at a maximum of 4 ml/L with every watering during the grow phase. Not compatible with hydroponic systems — designed for soil only. Because the organic components don't conduct electricity, standard EC meters won't give accurate readings. Alga Grow pairs directly with Alga Bloom for a simple two-product organic soil program. For growers who want to expand their feeding schedule, it's compatible with the full Plagron Natural line including additives like Silic Rock and Power Roots.