Perennial · Asphodelaceae family
lemon day-lily
Hemerocallis lilioasphodelus
In short a 10-second read
Lemon day-lily (perennial) grows to 0.7–0.8 m tall and 0.45–0.6 m wide when mature. It grows best in full sun to part shade, in average soil. It flowers in May–June; the flowers are yellow, red or pink. Hardy to −32 °C.
× spread 0.45–0.6 m
Where to plant
Sun, soil, frost.
It grows best in full sun to part shade, in average soil. Hardy to −32 °C.
Sun
Tolerates several positions — choose to suit the rest of the garden.
Soil and water
average · watering: moderate
Soil: loamy, clay, sandy, humus-rich
Soil pH 6–7.5
Frost
It copes with a normal winter outdoors.
How much space it takes
Mature size.
The mature plant next to a person (175 cm).
Next to a person
Reaches maturity in about 2–5 years. The final size depends on the cultivar and the spot — we give the range from smallest to largest.
Calendar
What to do and when.
Months for Central Europe. The line shows the current month.
The year at a glance
Flowers
May–June · yellow, red or pink
Pruning
remove flower stems (as needed); remove dead and damaged growth (as needed)
Planting
container plant: March–May, September–November
Winter protection
not needed
Overwintering
It copes with winter on its own.
It overwinters outdoors without protection, hardy to −32 °C.
- Needs no protection
- Hardy to −32 °C
- Dies back in winter and regrows in spring
What to combine it with
Same needs, different flowering.
They share the same sun and soil and flower in other months — so the bed flowers for longer.
Frequently asked
Quick answers.
When does lemon day-lily flower?
In May–June; the flowers are yellow, red or pink.
Does lemon day-lily tolerate shade?
It tolerates part shade (3–6 hours of sun), but not full shade.
How much space does lemon day-lily need?
At maturity 0.45–0.6 m wide and 0.7–0.8 m tall; recommended spacing 50 cm.
Does lemon day-lily survive winter outdoors?
Yes, without protection, hardy to −32 °C.
Where the data comes from
The data is indicative — we are still comparing it with further sources. Last checked 14 October 2026.
Show sources (23)
- Missouri Botanical Garden Plant Finder — Hemerocallis lilioasphodelus
- GBIF Backbone Taxonomy — Hemerocallis lilioasphodelus
- GBIF Occurrence Search API — Hemerocallis lilioasphodelus
- Wikidata (CC0) — Hemerocallis lilioasphodelus
- Perennials.com (Heritage Perennials) — Hemerocallis lilioasphodelus: Height 75–90 cm
- Foerster-Stauden, katalóg
- Bamberger Staudengarten
- RHS - Hemerocallis lilioasphodelus
- Iowa State Extension - How to Plant Perennials
- RHS - How to grow perennial plants
- Plant Lust
- Plant Lust
- American Meadows
- Plant Lust
- Plant Lust
- Plant Lust
- Plant Lust
- Invasive plant lists — this species is not on them: EU, Slovakia, Czechia, Germany, Poland, Denmark
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