Is seaweed (in it's pure state) a good fertilizer for all types of fruits and vegetables? I am thinking more for growing; Garlics, Potatoes, Carrots, Cabbages, Brocolii, Onion, Melons and Tomatoes.

guerseygrower wrote:

Is seaweed (in it's pure state) a good fertilizer for all types of
fruits and vegetables? I am thinking more for growing; Garlics,
Potatoes, Carrots, Cabbages, Brocolii, Onion, Melons and Tomatoes.


As a general fertilizer, I don't think seaweed contains enough NPK to
make a difference but is helpful in other ways. I found this tidbit
online that sums it up nicely:

"SEAWEED MEAL AND RAW SEAWEED
Again, an important principle must be kept in mind: We do not use
seaweed as a source of NPK-type plantfoods. In fact, seaweed contains
only a smidgen of nitrogen, a speck of phosphate, and a morsel of
potash. Its signal values are in the excellent assortments of secondary
and trace minerals it provides, such as magnesium, sulfur, iron, zinc,
iodine, molybdenum, boron, manganese, and copper.

Also, seaweed is a good soil conditioner, serving to loosen and improve
tough, cloddy soils. In addition, it acts as a chelating agent to help
plants glean minerals for an adequate diet."

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