Though stargazer lilies make a brilliant splash in your garden when they’re blooming, once each stem produces flowers, no more will grow back. They will last in the garden or in a cut flower arrangement for up to two weeks. Take care when cutting or handling them, as the pollen on the stamens stains clothing or any fabric that it comes into contact with.
For the most enduring blooms, cut the stems when buds have just barely swelled and begun to flush with color. Cut with the sharpest shears you have on a 45-degree angle and submerge the stems in water with cut-flower food or a mix of 1 quart water, 2 tablespoons lemon juice or apple cider vinegar, 1 tablespoon sugar, and a half teaspoon of bleach.