Daylily 'Red Twister'

How to grow hemerocallis

Find out all you need to know about growing hemerocallis (daylilies), in this detailed Grow Guide.

A table displaying which months are best to sow, plant and harvest.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Plant
Plant

Do not Plant in January

Do not Plant in February

Do not Plant in March

Do not Plant in April

Do Plant in May

Do Plant in June

Do not Plant in July

Do not Plant in August

Do not Plant in September

Do not Plant in October

Do not Plant in November

Do not Plant in December

Flowers
Flowers

Plant does not flower in January

Plant does not flower in February

Plant does not flower in March

Plant does not flower in April

Plant does not flower in May

Plant does flower in June

Plant does flower in July

Plant does flower in August

Plant does flower in September

Plant does not flower in October

Plant does not flower in November

Plant does not flower in December

Divide
Divide

Do not Divide in January

Do not Divide in February

Do Divide in March

Do Divide in April

Do not Divide in May

Do not Divide in June

Do not Divide in July

Do not Divide in August

Do not Divide in September

Do Divide in October

Do Divide in November

Do not Divide in December

Cut back
Cut back

Do not Cut back in January

Do not Cut back in February

Do not Cut back in March

Do not Cut back in April

Do not Cut back in May

Do not Cut back in June

Do not Cut back in July

Do not Cut back in August

Do not Cut back in September

Do Cut back in October

Do not Cut back in November

Do not Cut back in December

Hemerocallis are commonly known as daylilies as their individual flowers last only one day.

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These exotic flowers are ideal for sunny borders and the foliage is often evergreen in milder locations. There are thousands to choose from in a range of colours, from white through yellow to deep red and burgundy. Hemerocallis are easy to grow, produce blooms for weeks on end, that make good cut flowers as well as being attractive to native insects, particularly hoverflies and ladybirds. And, if you’re willing to try, some hemerocallis varieties are considered to be an edible delicacy – fried or added to salads.

Get the know-how you need to grow dazzling daylilies, below.


Where to grow hemerocallis

Emerging daylily shoots
Emerging daylily shoots

For best results grow hemerocallis in fertile well-drained soil in full sun to partial shade.


Planting hemerocallis

Daylilies like a little moisture, so add plenty of organic matter when planting. Monty Don shows how to plant daylilies.


Propagating hemerocallis

Dividing a clump of daylilies with a saw
Dividing a clump of daylilies with a saw

Here Carol Klein explains how to lift and divide hemerocalis:


Hemerocallis: problem-solving

Hemerocallis 'Ruby Spider'
Daylily ‘Ruby Spider’

Hemerocallis are relatively trouble-free to grow. New shoots are susceptible to slugs and snails and gall midge can affect early-flowering varieties


Caring for hemerocallis

Daylily clump after being cut back
Daylily clump after being cut back

Keep hemerocallis plants well watered during dry spells. You can deadhead spent flowers, but the seedpods are attractive in their own right. Cut flowering stems back at the end of the summer. Established clumps can be reinvigorated by dividing every three to five years.


Hemerocallis varieties to grow

Hemerocallis lilioasphodelus
Hemerocallis lilioasphodelus
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  • ‘Lenox’ – with delicate, cream-white flowers with a maroon ‘eye’ and pale green-yellow throat. The blooms appear early in the morning
  • ‘Night Beacon’ – produces purplish-pink flowers with a yellow throat from June to September
  • ‘Always Afternoon’ – produces masses of purple-pink flowers with a yellow throat from June to September. Its foliage is evergreen in milder regions and makes the perfect foil for spring bulbs
  • ‘Chicago Apache’ – bears masses of red, lily-like flowers with a yellow throat, from June to August
  • ‘Piano Man’ – produces fragrant cream flowers with a plum-coloured eye and green throat in abundance
  • Hemerocallis lilioasphodelus – a fragrant, yellow-flowered species with attractive grassy foliage, flowering in June