Keeping heating bills down by setting thermostats to 68°F (20°C) has benefits beyond economy: your cut tulip bouquets will last longer too.
Fresh tulips will last six to eight days in the vase if kept in a room of 68°F (20°C). “Research shows that the temperature of the room where the vase is kept is the most important factor in determining the vase life of cut tulips,” says NFBIC’s Sally Ferguson. “When the temperature is kept at 86°F (30°C), they will fade within 2 to 3 days. At 50°F (10°C), tulips remain fresh for up to 17 days.” Wow, 17 days is astounding! But, even for beauty, who wants to live in an igloo? Be comfortable: Set your thermostat to 68°F (20°C) or 70°F (21°C) and both you and your tulips will be happy!
Other tips for enjoying long-lasting tulip bouquets: use a clean vase and fresh cool water, trim the stem ends with a sharp clean knife prior to arranging, top off water daily as tulips are thirsty flowers, and keep vases of tulips away from sources of heat and out of direct sunlight, very dark locations or drafts. Unlike other flowers, cut tulips will continue growing taller in the vase, often gaining up to an inch or more in height.