56-63 days. Annual Flower. Open Pollinated. Royal Carpet Alyssum flower seeds are an essential fragrant and award-winning grow whether kept in the garden or used to accent a home or office. Royal Carpet seeds are quick to maturity with a season's worth of dazzling shades of magenta, violet, and fuchsia blooms. Royal Carpet Alyssum debuted as an AAS Bedding Plant Winner for its low-maintenance and season-long perfume. Alyssum is flower very adaptable to pots, planters, and baskets but will thrive just as readily in a cool, shaded flower bed.