Mineral composition of seaweed?

[Juliet]

Anyone know what the mineral composition of seaweed, specifically SM3 seaweed extract, is?  I've just stuck some bits of hardy geranium in pots with narcissus planted round them, & I want to feed the geraniums without using something high in nitrogen, as narcissus don't like nitrogen.  Chase organics, where I got the SM3, say it's suitable, but don't know or won't tell what the composition is, which leaves me a bit dubious.  I'd rather risk killing the geraniums by not feeding at all than risk killing the narcissus by giving something high in nitrogen.

[Juliet]

[the_snail]

In my thought, seaweed fertilizer is rather high in nitrogen. It can be used as a watered or diluted soil feed for your plants or it can be used as a foliage food by spraying it onto the plants leaves.

The_Snail

[tim]

Having farmed in Jersey before the war, I keep saying that vraic is great.

Too heavy in NPK? No way! It has virtually nothing but trace elements.

Try http://en.wikipedia.org/wiki/Seaweed_fertiliser

[the_snail]

Well you learn something new every day. Thanks Tim.
I used to use it on my seedlings in spring to give them a good start in life.

The_Snail

[Juliet]

Thanks Tim - I've been searching the Internet for something like that for a couple of days, to no avail - exactly what I wanted to know.  Don't think the narcissus mind a bit of Nitrogen, so long as it's not top heavy - & it sounds as though the seaweed should have rather more Potash, which they like, & not an awful lot of either.  I'll get feeding!

[tim]

I regard it as more of a health-giving substance than anything else.