Shasta daisies, or Leucanthemum spp., are stalwarts of the summer garden. Often producing masses of daisy flowers during July, August and September, these perennials are both tough and reliable, ...

* What it is: An early-summer-blooming perennial flower with showy white-petaled blooms around a central yellow-gold disc. Flowers form at the top of flower stalks. On dwarf varieties, stalks shoot up ...