You can make a five-seed mix at home from single seeds. For proportions, you could follow Habbitree’s Seed Mix Powder, which lists its ingredients by percentage. Seed Share in Seed Mix Powder For 100 g Sunflower 27.0% 27 g Pumpkin 25.5% 25.5 g Watermelon seed kernels 19.5% 19.5 g Chia 15.5% 15.5 g Flax 12.5% 12.5 g Mix and store in an airtight jar in a cool, dry place. Or buy the ready-made Power 5 Seed Blend. See how the two compare.