Quote:
Originally Posted by fergus banana
what is the benefit of seaweed extract? i have never used that stuff before. if it is cheap and good for the plants then i may give it a go.
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There is the cheap stuff (to be avoided) that is sea-shore kelp run through an olive press or similar. These folks are laughing all the way to the bank because it often contains unwanted salts and the nutrients have not been "balanced" for plants.
In contrast, you can find reputable manufacturers that use an extraction process that also utilizes some ionic chemistry to reduce some of the mineral content -- so that long-term application will not adversely effect the growing environment.
Norwegian Kelp is the typical source:
Ascophyllum nodosum - Wikipedia, the free encyclopedia