Most wildflower seeds and mixtures have a purity of 95-99% and total viable seed percentages of between 70-95%. The total viable seed percent is the germination percent, plus the hard seed or dormant seed percent. Hard seeds have impermeable seed coats and cannot imbibe water during seed testing. Dormant seeds are viable seeds that have specific physical or physiological conditions that prevent the seed from germinating at the time of seed testing. The PLS (Pure Live Seed) is obtained by multiplying the percent purity by the percent total viable seed and then dividing by 100.