How much, if any, phosphorus is there in hemp hearts. I am trying to increase my protein intake but fear the increase in phosphorus. Thanks.

Fair amount but... Hemp hearts are one of the most nutrition-rich and dense of all foods, rich in complete protein, essential fatty acids, vitamins and minerals. They are also rich in phoshorous- this website says 3 tbsp (30 gms) has 45% of the daily value which would be 315 mg. But why are you so concerned about avoiding phosphorus? What is important is not so much total phos. But ratio to calcium ; magnesium.