Answer: Shasta daisies will bloom from now until frost. The best way to deadhead them is to cut the entire stem down. I cut mine low enough that the other stems will hide the cut stem so you don't see it just sitting there all bare. Cut it close to a leaf and a new but smaller flowering stem will appear. Shasta daisies expand as they grow, eventually leaving a hole in the center of a large mound of leaves and stems. This takes 3-4 years, but at that time you'll want to dig the whole plant up and divide the outer ring, discarding the dead center. This way you'll have lots of smaller plants to place in your garden or give away to gardening friends.
Enjoy your garden!
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