Green Star gladiolus plants benefit from a well-balanced fertilizer that contains equal parts of nitrogen, phosphorus, and potassium, such as a 5-10-10 or 10-20-20 fertilizer. These nutrients help promote healthy growth, strong roots, and vibrant blooms. It's important to apply fertilizer at the right time to avoid overfeeding or underfeeding. A
Apply fertilizer when planting, then once a month during the growing season, and stop fertilizing after the flowers have faded. Be sure to follow the manufacturer's instructions for application rates and watering. Proper fertilization can help your Green Star gladiolus thrive and produce beautiful, show-stopping flowers.