Experiment setup on day 0 of perennial flax postharvest performance experiment (photo credit: Julia Stuenkel). Scale Bar = 5 cm.
St. Paul, MN - A recent study investigates the effect of Oasis® Floral Foam on the postharvest longevity and quality of perennial flax (Linum perenne) cut flowers, providing valuable insights for the floral industry. The findings offer a better understanding of how floral foam influences water uptake, flower freshness, and overall vase life.
Perennial flax, appreciated for its delicate blue flowers and vibrant colors, has growing potential in cut flower markets. However, maximizing vase life remains critical for commercial success. This study evaluated whether Oasis® floral foam-commonly used in floral arrangements for structural support and water supply-enhances or hinders the postharvest performance of flax stems.
Anchorage of flower and foliage stems is critical to keep the materials in place in floral design artistry as well as maintain turgor pressure in the stems, leaves, and flowers by supplying water and floral preservatives to the cut stems for uptake by the xylem. While numerous types of materials can be used (e.g., rockwool, coir, Oshun PouchTM), floral foam is the most widely used mechanic worldwide to anchor flowers and foliage in floral designs. Therefore, it is important to determine how perennial flax stems respond to floral foam and their postharvest life before the crop can be commercialized as a specialty cut flower
By analyzing factors such as stem blockage, moisture retention, and flower wilting, the study highlights best practices for maintaining floral quality in commercial and retail settings. Proper hydration methods are key to extending the postharvest life of perennial flax, with implications for florists and floral designers seeking to enhance display longevity.
These findings contribute to improving handling techniques for cut flowers, supporting floriculture professionals in optimizing the freshness and aesthetic appeal of their arrangements. The study also underscores the importance of postharvest care in reducing waste and maximizing the value of specialty cut flowers.
Dr. Anderson is a Professor in the Flower Breeding & Genetics, Microbial & Plant Genomics Institute at the University of Minnesota. His program focuses on winter-hardy herbaceous perennials with ornamental value as well as R&D on ornamental plant crops which produce natural compounds useful as green pesticides.
