DIY Lemon Centerpiece * * * - 6″ glass vases (square looks best) - lemons (real or fake) - bouquets of artificial white hydrangeas & yellow roses. In lieu of hydrangeas & yellow roses, you may use any flower you wish – daisies would look pretty, too! ---- Simply add the lemons to your vase; add flowers. Cut the stems short; place in vase. ---- You can also use real lemons and cut to reveal the slices.