PURPLE PRAIRIE CLOVER:  Rare in the Edmonton area, this native legume is more common in southern Alberta, occurring on dry sites.  Plants emerge late in the spring and produce spikes of vibrant purple flowers in July and into early September.  Difficult to start from seed.  A 4-6 week moist stratification period is recommended followed by very warm temperatures to trigger germination.  Cover the seeds with .5 cm of soil.  Plants grow to 40 cm tall and require a sunny, well-drained site.  40 seeds.  NF 752