Zinnias benefit from deadheading to encourage further blooming. Deadheading can be done with finger and thumb or with pruning shears, knife, or scissors. Some gardeners recommend deadheading to encourage further flowering. Regular deadheading can extend the blooming period. Deadheading flowers with many petals, such as roses, peonies, and camellias prevents them from littering. Removing faded blooms (deadheading) forces the plant to produce more flowers. There is strong repeat flowering, encouraged by deadheading, well into autumn. Deadheading is the horticultural practice of removing spent flowers from ornamental plants. Deadheading the flowers ensures it does not become weedy. Low-maintenance plant does not need deadheading. Deadheading may also be performed for aesthetic purposes, if spent flowers are unsightly. It requires little maintenance, although Deadheading is beneficial. Six of the passengers were Korean Air flight attendants, who were deadheading. Likewise, if the plant bears attractive seeds or fruits, deadheading is normally avoided. There were also four flight attendants, (13 were deadheading).