There are many lovely Coreopsis (Tickseed) from which to choose, most reaching a height of about 2 feet, although size can vary drastically between cultivars. Considered to be one of the best native wildflowers available for the garden, Coreopsis (Tickseed) are easy to grow, displaying daisy-like, cut flower-perfect blooms in vibrant shades of yellow, pink, and more, and a long bloom time -- all summer and into the fall. The growth habit of perennial Coreopsis (Tickseed) is quite variable, from very compact to informal and sprawling, although all are well-formed and bushy.