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|Liriope muscari (Lilyturf)|
|File:Liriope muscari flowers.jpg|
|Unrecognized taxon ():||Liriope|
| Liriope |
Liriope muscari is a species of low, herbaceous flowering plants from East Asia. Common names in English include big blue lilyturf, lilyturf, border grass, and monkey grass. It is a perennial with grass-like evergreen foliage and lilac-purple flowers which produce single-seeded berries on a spike in the fall.
It is a tufted, grass-like perennial which typically grows 30–45 cm (Template:Convert/Dual/prnd) tall and features clumps of strap-like, arching, glossy, dark green leaves to ½ inch wide (1.3 cm).  Clumps slowly expand by short stolons to a width of about 30 cm (12 in), but plants do not spread aggressively. Roots are fibrous, often with terminal tubers. The small, showy flower occur on erect spikes with tiered whorls of dense, white to violet-purple flowers rising above the leaves in late summer. Flowers resemble those of grape hyacinth (Muscari), which is the origin of the species name. Flowers develop into blackish berries which often persist into winter. Lilyturf is deer resistant. There is considerable variation in leaf color and size among a number of recognized cultivars.
Distinguishing species in the genus Liriope is difficult at best, and mistaken identity occurs in commercial nurseries. Lilyturf is distinguished from creeping lilyturf (Liriope spicata), the other most common species in the genus, by its fibrous root system (in contrast to the rhizomatous root system of creeping lilyturf), its more prominent flower spike extending above the leaves (creeping lilyturf has a shorter spike more within leaves), and its generally wider and longer leaves when compared to creeping lilyturf.
Landscape uses include borders (along sidewalks, trails, driveways, shrubbery, and trees) and mass plantings as groundcover. Lilyturf can be established on steep slopes where erosion control is needed. Minimal maintenance is required.
Being an easy plant to grow, it is one of the most popular groundcovers in the southeastern United States and areas with a similar climate, and is commonly used in landscaping in temperate climates as border plants and groundcover.
The species is easily grown in average, medium, well-drained soils in full sun to part shade. Ideal conditions are moist, fertile soils with partial shade. However, lilyturf tolerates wide range of light and soil conditions. Lilyturf is also tolerant of heat, humidity, and drought. The evergreen foliage often turns brown in late winter; old foliage can be cut back or mowed at a high setting before new shoots appear early spring. Lilyturf is suitable for USDA Hardiness Zones 6 to 10. It might be grown in zone 5 in sheltered locations or if protected during severe winter weather.
The plant is difficult to reproduce from seed due to several factors.  The fruit's pulp contains phenolic compounds which inhibit germination, and thus needs to be removed to promote germination. In addition, seeds have a morphological dormancy because embryo is not fully developed when fruit ripen; a period of warm stratification is required to complete maturation. Lastly, the seeds do not store well. Cleaned seeds can be sown outdoors after the fruit ripen in early fall, recognizing that germination will be slow the following spring. Rapid germination can be promoted by warm, moist stratification of cleaned seed under dark conditions for 8 weeks at 77 degrees F (25 degrees C) for optimum germination. Stratified seeds can be started indoors or in a heated greenhouse during the dormant season or they may be sown outdoors after the threat of frost has passed.
Lilyturf is easily reproduced by dividing the root mass. The optimum time to do this is during the dormant season before onset of new growth. Plants produced by division are identical to the mother plant; thus cultivar traits will be retained.
No serious diseases or pests occur for cultivated Liriope muscari. Root rot (Pythium) has been reported. Anthracnose fungus sometimes causes reddish steaks in the leaves. Scale insects have been reported to cause unsightly reddish spots on leaves during late summer. Slugs and snails are occasional pests.
Some people feel that lilyturf in the United States has been overused as a landscaping plant and that suitable native plants can be used in its place. Lilyturf is reported to have little wildlife value.
- Plants for a Future: Liriope muscari.
- Edward F. Gilman 1999. Liriope muscari. University of Florida: Cooperative Extension Service. Fact Sheet FPS 347.
- Mary C. Broussard. 2007. A Horticultural Study of Liriope and Ophiopogon: Nomenclature, Morphology and Culture. Louisiana State University. Dissertation. 129 p.
- "RHS Plant Selector - Liriope muscari ". http://apps.rhs.org.uk/plantselector/plant?plantid=3390. Retrieved 26 June 2013.
- John Jones; Sarah White. Seeds of Liriope muscari Require Warm Stratification for Germination. University of Kentucky, College of Agriculture, Department of Horticulture.
- T. Shimomura, T. Kondo 2000. Seed Germination and Polyembryony of some Liliaceae Ground Covers Native to Japan. Horticulturae 517.
- Jay Deputy. 1999. Liriope, the “Other” Mondo Grass. College of Tropical Agriculture & Human Resources, University of Hawaii at Manona: Cooperative Extension Service.
- Go Native: Dwarf gamma grass vs Liriope.