Viburnums are springtime bloomers. These shrubs take a few years to get established, so you may not see a torrent of blooms in the early years. After the first year or two of establishing itself in your landscape though, your viburnum will present you with a beautiful floral display. Expect flowers to appear for two to four weeks in late spring. These show stopping shrubs don't fade into the background when they're finished blooming either. You'll enjoy bright berries in the summer--sure to attract cardinals, cedar waxwings, and other songbirds. The bright and glossy green leaves make viburnums a standout shade plant in the warmer months. A few viburnum varieties remain evergreen, but most provide a beautiful display of stunning fall color in orange and scarlet. Viburnums are truly a shrub for all seasons.