There are two main cultivars 'Big Blue' and 'Variegata'.
The first is a slightly taller version of the wild type plant (up to 2 feet (60 cm) with violet flowers.
The second has colourful variegated leaves; these are not as dark a green as the wild-type and have cream coloured edge margins.
Other cultivars include 'Christmas tree' (green leaves, lilac flowers) and 'Lilac Beauty' (lilac flowers); the difference between these two cultivars and normal plants seems to be minimal.
Liriope muscari Video growing Guide
Liriope muscari Growing and Care Guide
Scientific Name:Liriope muscari
Common Name (s): Big Blue Lilyturf, Lily turf, and Monkey grass, Spider Grass
Growing Zone (USA / UK Hardiness): 5 to 10 / H5
Life Cycle / Plant Type: Evergreen perennial. Turf-like growth habit.
Plant Height: 1 to 1 1/2 feet (30 to 45 cm)
Plant Spread: 3/4 to 1 foot (22 to 30 cm)
Blooms: Late Summer and early Autumn.
Flower Details: Showy. Dense Racemes, Dense Spikes carry spiral whorls of small flowers. Violet, purple. Similar to Grape Hyacinth flowers.
Leaf Foliages: Strapped. Dark green. Glossy. Cream edged cultivar available.
Fruit: Black, Berry.
Best Light Conditions: Full sunlight to Partial shade; Can also grow in heavy shade but growth and spreading will be slow and the leaves not as showy.
Suitable Soil Types: Well drained. Fairly fertile soils for best results. Grows fine in average soils.
Suitable Soil pH: Slightly acidic to neutral for best results: 6.0 to 7.0
Soil Soil Moisture: Medium. Once established can tolerate drought conditions.
Sowing, planting, and Propagation: Propagation: Divide clumps at the roots by hand from late autumn to early spring.
Sow: Difficult. Ensure seeds are free of any fruit pulp as it contains phenolic growth inhibitors. Stratify in warm water for one day. Sow into seed-starting tray containing a sterile potting mix. Sow at a spacing of 1 inch (2.5 cm), lightly cover with grit to about 1/4 inch (6 mm) deep. Mist the soil tray and put lid on the seed-starting tray. Germinate at about 70 to 75°F (21 to 24°C).
Care: Cut leaves back to the ground using a mower at the start of spring. Provide shelter from cold winds in cooler areas.
Best used for: Ground cover, Borders, Butterfly gardens.
Family: Asparagaceae (Asparagus family)
Closely Related Species: Asparagus, Yucca, and Agave.
Miscellaneous: Can be distinguished from the related species Creeping Lilyturf Liriope spicata by its root system; which is fibrous as opposed to being a rhizome. The genus is named after the Greek woodland nymph of the same name.