Dr. Hawthorne holds a PhD in Plant Physiology and consults for major Dutch and British growers on cold chain management. With 15 years in the lab and field, he explains the biological science behind conditioning, bacteria control, and flower food.
Dr. Julian Hawthorne is a leading authority on the biological processes that occur in cut stems, dedicating his career to extending the vase life of commercial blooms. His academic background involved rigorous research into xylem blockage and the effects of ethylene gas on sensitive cultivars like sweet peas and carnations. Julian translates complex botanical concepts—such as geotropism in gladioli or the necessity of acidic water for hydration—into practical protocols for retail florists. He rigorously tests preservative solutions, debunking myths like 'pin-pricking tulips' or 'smashing woody stems' with evidence-based alternatives that actually protect the vascular system. His expertise covers the entire lifecycle of the cut flower, from the importance of the cool chain (5°C storage) to the chemical warfare required to fight Botrytis and bacterial soup in buckets. Julian writes for professionals who demand scientific accuracy to reduce waste and guarantee a 7-day vase life for their customers.