Kelp Fertilizers

Compare products by nutrient analysis, formulation, application method and label directions.

Jugs and bags of kelp fertilizer

Add Kelp for Trace Minerals and More!

Kelp Fertilizers and Seaweed-Based Inputs

Shop liquid kelp, kelp meal and blended fertilizers containing seaweed-derived ingredients. Products differ in nutrient analysis, concentration and whether kelp is the primary ingredient or part of a broader blend.

Choosing and Applying

Compare the label and intended use rather than assuming all kelp products provide the same nutrients or effects. Follow dilution and application directions for soil or permitted foliar use.

Browse liquid fertilizers, powdered fertilizers and organic and natural fertilizers.