Citron day-lily typically blooms in the summer months in the United States, with its flowers reaching their peak in June and July. The blooming period usually lasts for about 3-4 weeks, depending on the specific climate and growing conditions. To extend the blooming time, deadhead spent flowers regularly to encourage new blooms to form. Additionally, providing adequate sunlight, water, and well-draining soil can help promote continuous flowering throughout the season.
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