Revive Non-Blooming Daylily

I’m worried about the two old daylilies in my garden. They’ve thrived since 1921, but haven’t bloomed for the last several years. What can I do to save them?

Start by evaluating the growing conditions. Daylilies grow best in full to partial sun. Move to a sunnier location if needed. Also check the fertilizers you’re using. High nitrogen fertilizers can encourage vigorous growth and reduce or prevent flowering. If neither of these factors is the problem, the daylilies may be overcrowded. Give them more room by dividing crowded plants. Dig the clumps, divide into smaller sections and replant in well prepared soil. The new divisions should bloom within the next two seasons.