What is a substitute for Seaweed or Kelp Meal?
I'm not totally a permaculturist yet, however I make all my own homemade composts, tea brews, fertilizers, etc. for my 3 acre no-till farm.
I use and buy fresh or dried kelp for my compost tea brews because it contains lots of potassium and above 40-60 micronutrients. I spray it as a foliar/soil drench over all my lawn and garden plants. I above 5 hours from the nearest beach.
What is a substitute for this on a sustainable farming system, that I can make or grow myself?