Meadow Blazingstar (Liatris ligulistylis) One of the "signature" plants of the tall-grass prairie, meadow blazingstar has tall spikes of flowers (up to 70 cm high) that emerge from upright, leafy stalks. It blooms from late July to mid-August adding to the height of the prairie's glory, gently swaying among the tall, waving grasses. It produces fluffy, purplish seed heads in September.