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Perennial · Asphodelaceae family

Lemon day-lily

Hemerocallis lilioasphodelus

Full sun to part shade 0.7–0.8 m × 0.45–0.6 m Flowers May–June to −32 °C
Flower colours Click a colour

In short a 10-second read

SunFull sun to part shade
Size0.7–0.8 m
spacing 50 cm
FlowersMay–June
PlantingApril–May, September–October
WinterNo winter protection

Where to plant and how much to water

Sun, soil and water.

It grows best in full sun to part shade, in average soil.

Sun

Sun6 hours or more
Part shade3–6 hours
Shadeunder 3 h

Soil

acidic to neutral soil
acidicneutralalkaline
averagenot fussy about soil

Watering

only in dry spellsless when it rains

Frost

−32 °C
no winter protectiondies back in winter, regrows in spring

How much space it takes

Mature size.

The mature plant next to a person (175 cm).

50 cm1 m1.5 m0.7–0.8 mspread 0.45–0.6 m
0.7–0.8 m× spread 0.45–0.6 m

Plant 50 cm apart.

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

Through the year.

Months for Central Europe. The line shows the current month.

The year at a glance

Flowers: JanuaryFlowers: FebruaryFlowers: MarchFlowers: AprilFlowers: MayFlowers: JuneFlowers: JulyFlowers: AugustFlowers: SeptemberFlowers: OctoberFlowers: NovemberFlowers: DecemberPlanting: JanuaryPlanting: FebruaryPlanting: MarchPlanting: AprilPlanting: MayPlanting: JunePlanting: JulyPlanting: AugustPlanting: SeptemberPlanting: OctoberPlanting: NovemberPlanting: DecemberFeeding: JanuaryFeeding: FebruaryFeeding: MarchFeeding: AprilFeeding: MayFeeding: JuneFeeding: JulyFeeding: AugustFeeding: SeptemberFeeding: OctoberFeeding: NovemberFeeding: DecemberJanFebMarAprMayJunJulAugSepOctNovDec
FlowersPlantingFeeding
Now, in October: a good time for planting (container plant).
JanFebMarAprMayJunJulAugSepOctNovDec

Flowers

JanFebMarAprMayJunJulAugSepOctNovDec

May–June · yellow, red or pink

Planting

JanFebMarAprMayJunJulAugSepOctNovDec

container plant: April–May, September–October

Feeding

JanFebMarAprMayJunJulAugSepOctNovDec

March–May

What to plant now (October) full list in October (244) →

Feeding

Nutrition.

Light
balanced fertilisercompost or mulch
JanFebMarAprMayJunJulAugSepOctNovDec

Pests and diseases

Common problems and what to do.

The most common problems in Central Europe. Protection is listed from the gentlest option.

Hemerocallis gall midge

pest

What you will see

Buds are shorter and fatter, do not open and dry up; translucent grubs inside.

When to look

JanFebMarAprMayJunJulAugSepOctNovDec
May–July

How to protect

  1. Prevention
    • Grow later-flowering cultivars; this type is less often affected.
  2. By hand late May to early JulyPick off affected buds straight away and destroy them.
Hemerocallis gall midgepest · May–July

What you will see

Buds are shorter and fatter, do not open and dry up; translucent grubs inside.

When to look

JanFebMarAprMayJunJulAugSepOctNovDec
May–July

How to protect

  1. Prevention
    • Grow later-flowering cultivars; this type is less often affected.
  2. By hand late May to early JulyPick off affected buds straight away and destroy them.

Daylily rust

Puccinia hemerocallidis
disease

What you will see

Yellow to orange pustules on the leaves.

How to protect

  1. Prevention
    • Check new plants before planting.
  2. By hand once noticedRemove affected leaves.
Daylily rustdisease

What you will see

Yellow to orange pustules on the leaves.

How to protect

  1. Prevention
    • Check new plants before planting.
  2. By hand once noticedRemove affected leaves.

What you will see

Colonies on shoot tips and young leaves, sticky honeydew.

When to look

Spring – summer

How to protect

  1. Prevention
    • Check plants often and act early.
    • Encourage ladybirds, hoverflies, ground beetles and ichneumon wasps.
  2. By hand spring and summerSquash colonies with your fingers; wipe off honeydew with a damp cloth.
  3. Biological April to JuneLeave natural enemies to work; populations often catch up in spring.
Aphidspest · spring – summer

What you will see

Colonies on shoot tips and young leaves, sticky honeydew.

When to look

Spring – summer

How to protect

  1. Prevention
    • Check plants often and act early.
    • Encourage ladybirds, hoverflies, ground beetles and ichneumon wasps.
  2. By hand spring and summerSquash colonies with your fingers; wipe off honeydew with a damp cloth.
  3. Biological April to JuneLeave natural enemies to work; populations often catch up in spring.
More about this problem

What you will see

Eaten holes in leaves and young shoots, at night and in damp weather.

How to protect

  1. Prevention
    • Water in the morning, not in the evening.
    • In winter turn over the soil and remove fallen leaves — birds will pick out the eggs.
    • Encourage natural enemies (birds, toads, hedgehogs, ground beetles).
  2. By hand evening, spring to autumnCollect slugs and snails in the evening by torchlight on a warm, damp night; traps made of hollowed-out citrus peel or small containers of beer sunk into the soil — empty them in the morning.
  3. Biological spring to early autumnPhasmarhabditis hermaphrodita nematodes (they work on slugs, hardly on snails); apply to moist soil at 5–20 °C.
Slugs and snailspest

What you will see

Eaten holes in leaves and young shoots, at night and in damp weather.

How to protect

  1. Prevention
    • Water in the morning, not in the evening.
    • In winter turn over the soil and remove fallen leaves — birds will pick out the eggs.
    • Encourage natural enemies (birds, toads, hedgehogs, ground beetles).
  2. By hand evening, spring to autumnCollect slugs and snails in the evening by torchlight on a warm, damp night; traps made of hollowed-out citrus peel or small containers of beer sunk into the soil — empty them in the morning.
  3. Biological spring to early autumnPhasmarhabditis hermaphrodita nematodes (they work on slugs, hardly on snails); apply to moist soil at 5–20 °C.
More about this problem
Sources (5)

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.

purple coneflower

purple coneflower

0.9–1.2 m
✓flowers July–September
✓taller — for the back
orange coneflower

orange coneflower

0.5–0.95 m
✓flowers July–October
✓taller — for the back
African Marigold

African Marigold

0.15–1.2 m
✓flowers June–October
✓taller — for the back

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.

Hemerocallis gall midge — what can you do?

Grow later-flowering cultivars; this type is less often affected. Pick off affected buds straight away and destroy them.

Daylily rust — what can you do?

Check new plants before planting. Remove affected leaves.

Sources (23) Checked 24 October 2026

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