The “Happiness Overload” daylily —likely referring to one of the beloved reblooming yellow daylily varieties such as “Happy Returns” (one of the most popular continuous-blooming daylilies in the world) or its larger cousin “Big Time Happy” —is an incredibly tough and vibrant perennial. Daylilies get their genus name (Hemerocallis ) from the Greek words for “beauty” and “a day,” because each individual flower opens in the morning and lasts for only one day. However, these “happiness-inducing” rebloomers make up for it by producing dozens of flower buds on multiple stems, giving you non-stop sunny blooms from early summer all the way until the first fall frost. [1, 2, 3, 4, 5]
Key Characteristics at a Glance
- Flower Color: Canary or clear lemon-yellow.
- Bloom Time: Early summer through autumn (with regular deadheading).
- Mature Size: Grows to roughly 15 to 18 inches in height with a spread of 18 to 24 inches.
- Hardiness Zones: Thrives in USDA Zones 3–9.
- Special Features: Diurnal (blooms open during the day), mildly fragrant, drought-resistant, and deer/rabbit-resistant. [1, 2, 3, 4, 5, 6]
