If you condition of a cut the flower every 2 days and soak the flower part with water they can not a to a week
It is important thar.you submerge the blooming part of the flower in water to extend the life. I would say they last about 1 week.
About a week if properly prepared
They require a lot of water and replacing the water frequently will extend the life. Keep them in a cool area (70° or less would be ideal) and they can last more than a week.
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