How to grow liriope

Liriopes are hardy

Perennials are any plant living for at least three years. The term is also commonly used for herbaceous perennials which grow for many years (To compare: annual = one year, biennial = two years).

Flowers and foliage

The tiny purple or white bell-shaped flowers appear on stalks like drumsticks in early autumn. These provide a welcome splash of late colour in borders.

Although leaves are usually plain green, there are cultivars with yellow or white stripes on leaves such as Liriope muscari ‘John Burch. The new leaves of Liriope muscari ‘Okina’ emerge almost pure white in spring before maturing to green.

The most widely grown is the plain green leaved Liriope muscari. It forms dense clumps with grass-like leaves, reaching 25-45cm (10-18in) in height. The less well known Liriope spicata has a more spreading habit making it good choice for a dense ground cover in shadier spots. 

Liriope by flower and leaf colour

Liriope by flower and leaf colour

Buying Liriope 

If you are looking around garden centres when they start to flower in late summer, you will find Liriope muscari widely offered for sale as starter plants in 7.5-10cm (3-4in) pots or as larger plants in one to two litre containers.

For planting at other times of year, or if you fancy less common cultivars, you may need to buy plants from mail order suppliers or specialist nurseries. 

Specialist nursery Barracott Plants 
National Collection holder

Use the RHS Find a Plant tool to find stockists nearby or mail order suppliers.

When to plant Liriope 

Container-grown plants can be planted any time of years as long as the soil is not frozen or waterlogged, although the best time to plant is in spring or early autumn. If planting during the summer moths, water new plantings well during dry spells to ensure good establishment.. 

Plant in partial shade where the liriopes will get some sun for part of the day. This will encourage good flowering. When planted in deeper shade, liriopes will be shy to flower. Alternatively plant in a sunnier spot if the soil does not dry out for weeks in summer or it can be watered.
 

Soil preparation

Once established, liriopes can cope well with dryer soils in shade. However, to give the new plants best start, improve the planting area by digging in organic matter such as garden compost or a manure-based soil conditioner to hold on to moisture in the soil and reduce drying out. A bucketful per square meter/yard is sufficient. On poorer soils, consider applying general fertiliser such as Growmore, fish, blood and bone or Vitax Q4 before planting.
 

How to plant Liriope

• Water the pot well before planting
• Make the planting hole as deep as the rootball and two to three times wider
• Plant so the surface of the compost in the pot should be level with the surrounding soil
• Leave 30-45cm (1ft-18in) between individual plants
• Firm in well the soil around the rootball and water in to settle soil around the roots

Perennials: planting

Perennials: planting

Routine care of Liriope

• Water newly planted liriopes during the first year in dry spells help them establish well
• Mature clumps seldom need regular watering, apart from when the summer is very dry or if the plants are growing in full sun
• Apply a general fertiliser in spring to boost growth if the plants seem to be struggling 
• The poor performance may be caused by excessive dryness of the soil and mulching with organic matter such as garden compost or a manure-based soil conditioner and watering may help more than feeding​

Pruning Liriope

Liriope muscari – remove old dead and damaged leaves in spring by hand. After few years the leaves can look untidy and you can rejuvenate the plants by cutting them hard back in spring.

Liriope spicata – the finer foliage is often damaged by the winter weather, so the plants often benefit from annual sheering of the leaves in spring.
 

Deadheading

Do not remove flower spikes after flowering as the bell-shaped flowers are followed by dark purple berries. Prune the old flower spikes out when tidying up the clumps in spring. 

Division

Perennials: dividing

Perennials: dividing

From seed

If you want a bit of challenge, you can try sowing seed extracted from the berries in trays or containers in spring and maintain a temperature of 10°C (50°F). Bear in mind that cultivars are unlikely to come true from seed, so these are best divided.

Liriopes are usually not troubled by pests and diseases.

Poor growth and flowering

Dryness of the soil can result in poor growth. Try mulching with organic matter such as garden compost or a manure-based soil conditioner and water during dry spells. If growing sunny spot, consider moving the plants to light shade.

If grown in deep shade Liriope produce very few or no flowers.  Try pruning back overhanging branches to allow more sunshine to reach the plants or move to a spot where they get sunshine for a part of the day.