Soil Supply Co.

Kelp Meal

Release Speed Moderate
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Size
Species
Price: $12.00
Description

Kelp Meal is a natural, organic amendment made from dried and ground seaweed — a rich source of potassium, trace minerals, vitamins, and natural growth hormones essential for plant health and development. We offer two distinct species, each with its own hormone profile: Ascophyllum nodosum (North Atlantic) leans more cytokinin-rich, promoting cell division, lateral bud development, and overall plant vigour, while Durvillaea potatorum (Australian bull kelp) leans more auxin-rich, driving root elongation, apical dominance, and directional growth responses.

In reality both species carry a mix of hormones — these are dominant leanings rather than absolutes — and they complement each other well when used together. Their main role is as growth promoters and elicitors, soil conditioners, and trace-mineral sources: they support root growth and microbial activity in the soil. While they do provide a useful NPK contribution weighted toward potassium, their real value lies in the wide array of cytokinins, auxins, and other growth stimulants they deliver — making them true biostimulant ingredients rather than simple fertilisers.

AD: 1 - 0.5 - 5 & DP: 1.5 - 0.2 - 7

Potassium, Nitrogen, Phosphorus, Trace Minerals

Provides a source of NPK and trace minerals, plus a wide array of cytokinins, auxins and other growth stimulants.

Mix 8–12 g per 5 L of soil when building your mix, or top-dress lightly through the season. A rich source of potassium, trace minerals and natural growth hormones.

Soil people, same as you.

Soil Supply Co. started because we got sick of paying premiums for inputs that under-delivered. If we wouldn't put it in our own soil, it's not on the shelf.