How to Deal with Rotten Leaves on Gladiolus? A Detailed Guide to Practical Methods
How should rotten leaves on gladiolus be handled?

When the disease occurs, spray the leaves with 58% mancozeb wettable powder at 500 times dilution, or 75% chlorothalonil wettable powder, or 50% carbendazim wettable powder at 1000 times dilution, spraying once every 7 days; generally 3-4 sprays are enough.