Try some garden supply or nurseries,...perhaps you could can make a solution yourself with dried seaweed, most Chinese store have and soak it in warm water for a couple of day's?
I love eating it dry!
Konrad

Thank you Konrad. No nurseries carry this item as far as I know. Unfortunately soaking dry edible seaweed will not work. I want it for my roses. It is suppose to be good for all kinds of crops. I hope some one else may know.

Sengyan

Check T&T seeds. They have it in concentrated form and liquid that you just mix with water.I found it in the fertilizer ection.s

Cheers Al

Here is a link that might be useful: T&T seeds

Thank you Al for your info ( I hope I have your name correct )I found a company that deals in it in Calgary.

Sengyan