Shasta daisies are the flowers that come to mind when most people think of daisies. A ring of white petals surrounds the bright yellow center. They often are planted in beds, in wildflower gardens or in borders. Shasta daisies require minimal pruning to bloom abundantly. They will still thrive if not regularly pruned, but they won't blossom as profusely. Whether potted or grown outdoors, proper trimming encourages lusher growth and helps prevent disease.
Pinch off the top ½ inch of the tips of the stem when they first reach 6 inches long. Pinching encourages fuller growth and more flowering. This is more important for potted daisies than those in a garden bed, though both benefit.
Cut back the stem after the flower fades to prevent it from going to seed and to encourage further blooming. Cut it off 1 to 2 inches down the stem using sharp garden shears. Check the plant weekly during the blooming season for spent blooms.
Cut off the stem entirely once it quits producing buds and flowers. Cut it off at the base near the soil, using caution not to pull up the plant as you snip.
Remove any dead or damaged leaves. Trim them with your shears; don't pull them.
Allow the daisies to die back naturally in autumn and cut the foliage to the ground once it has yellowed and died back on its own.