Celebrity designer Martha Stewart shares her favorite spring flowers, tulips, lilacs, poppies, and lilies, which she enjoys most. These flowers offer bright and bold colors and unique shapes and textures. While some of her favorites don't last long, she offers tips on how to keep these flowers fresh. These include cauterizing the bottoms after cutting them using a lighter or candle, pinpricking tulips to prevent them from drooping. Additionally, using frogs and unique vases to enhance the plants' appearance.