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Plant Care, Soil & Accessories

OGS 1kg Oyster Shell Flour Premium Calcium Source for Plants Immune System Boost


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Oyster Shell Flour [1kg]

Oyster Shell Flour is a premium Calcium source that takeslonger to break down than other Calcium sources. This means by using Oyster Shell Flour you significantly reducetherisk of lockoutissues arising when compared withalternative Calcium sources, which can be completely broken down in a few weeks inan active enough rhizosphere.

What is Oyster Shell Flour?

Our freshly ground Oyster Shell Flour iscomposed of a complex Calcium Carbonate matrix, interlocked with trace elements and covered in kelp and microbes.Oyster Shell Flour has been shown to:

Act as a Liming agent for the soil, providing pH buffering
Improve soil tilth
Provide and help to sustain favourable conditions for microbial activity
Stimulate enzyme activity
Increase Cationic Exchange Capacity (CEC)
Boost the plants immune system

In addition, the slow release Calcium is utilized by plants to facilitate the movement of heavy macro-molecules around plants, helping to increase the structural integrity, promote new growth and increase resistance to disease.

Oyster Shell also contains Chitin which is beneficial to the plants immune system when converted into chitosan by an enzyme released from the plant (chitanase).

How do I use Oyster Shell Flour?

Oyster Shell Flour should be used as a soil amendment. Apply1 cup per 30L of base mix that is already in a 1:1:1 ratio.

Note:Due to the finegrain size, we recommend you be careful when handling Oyster Shell Flour and consider wearing PPE.

Sold by the kilogram.

Custom bulk orders are available upon request.


Product Code2547


Estimated delivery: 2-7 business days
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