Flowering cherries are a beloved symbol of spring. Bring a few of those branches indoors to enjoy a stunning bouquet of floral loveliness. Cherry stems often take up to four weeks to flower. Keep the water in your forcing vase changed every other day to prevent bacteria build-up. ZuZu flowering cherry is a shrub version of the classic tree, growing three to five feet tall and wide. It’s the perfect size for any yard. Hardy in Zones 5-9.