Plant Daylilies to attract butterflies and hummingbirds. Beginners learn quickly, and the old pros know. An investment in Daylilies pays great dividends. Foliage that looks great all season, flowers in a rainbow of colors, no special care and now, many that reward you with both a spring and fall season of bloom. “Reblooming Daylilies” are just that. Big bloom during regular Daylily season in late spring, and then bloom off and on for the rest of the season, usually with a burst of bloom before fall.