Watch the development of the orange tulip on a daily basis. The stem is ready to slice when the flower develops full color but has not yet bloomed.
Prepare a vase with filtered water on the morning you plan to cut the flower. Mix in a flower preservative to prolong the life of the tulip. Flower preservatives are available at florist shops, and the mixing directions may differ between brands; read the label carefully.
Carefully clean a razor blade with rubbing alcohol to kill any germs or bacteria. The razor blade should be as clean as possible to reduce the risk of damage to the exposed center of the tulip stem.
Slice the tulip stem in the early morning. Cut at a 45-degree angle, between 8 and 12 inches below the flower head.
Transfer the tulip directly to the vase.