Pacific Northwest Organics Kelp Help. Natural Pacific northwest cold water kelp, soil and foliar concentrate for all plants. For use as a foliar and for soil irrigation. Mix 1 tbls per quart of water. For seedlings water once a week. For vegetables and berry plants spray every 7 days or soil apply every 14 days. Contains 22% kelp (microbe food) derived from Nerecystis Luetkeana and .4 % Humic acid from Leonardite Shale. 32 oz bottle.