Plant Min Zone: 5b
Plant Max Zone: 11b
Sunlight: Part Sun, Shade, Deep Shade
Water / Rainfall: Low, Average
Soil Quality: Poor, Average
Bloom Season: Early Summer
Flower Color: Purple
Berry / Fruit Color: Bluish Black
Spring Foliage Color: Dark Green
Summer Foliage Color: Dark Green
Fall Foliage Color: Dark Green
Evergreen Foliage: Yes
Winter Interest: Yes
Scented Flowers: No
Drought Tolerance: High
Wet-Feet Tolerance: Medium
Humidity Tolerance: High
Wind Tolerance: Medium
Poor Soil Tolerance: Clay Soils, Rocky Soils, Sandy Soils, Shallow Soils, Acidic Soil (low PH)
Height: 0.75' - 1'
Width: 1' - 2'
Growth Rate: Medium
Service Life: Very Long: 10-20 years
Maintenance Need: Low
Spreading Potential: Low
Yearly Trimming Tips: Trim Evergreen Perennial Only if Winter-Kill Occurs.
Plant Grouping Size: Mass Planting of 10 or more
Best Side of House: South Exposure, West Exposure, East Exposure, North Exposure
Extreme Planting Locations: Root-Bound Soils Under Tree, Survives Severe Drought
Ornamental Features: Long Lasting Fall Color, Multiple Seasons of Interest, Fine Texture
Special Landscape Uses: Groundcover, Erosion Control, Lawn Substitute
Possible Pest Problems: Stem/Crown Disease
Plant Limitations: May get Occasional Winter-kill
Royal Purple Liriope (Liriope muscari 'Royal Purple') grows to form a dense, dark green, grass-like groundcover in medium to full shade. As one of the very best "dry-shade" plants, it has environmental and economic traits that can help conserve water and lower your water bill! Plantings can thrive for decades if in the right spot; there is no such thing as overcrowding for Liriope. When planted in mass, growth is slow at first but eventually a cake-like rhizome system will form and completely smother out any weeds and compete well with trees for water and nutrients. Even under the most hostile conditions such as huge silver maple and pin oak trees, liriope not only survives but thrives. While Big Blue Liriope can tolerate full sun, they prefer part to full shade. Sun burning is possible with temperatures over 100° and there are better plants to use in hot areas. Liriope has no insect or disease problems, will survive droughts, short-term floods and cold winters. In the winter, it will stay green until 0 degrees F and be completely evergreen some winters. Liriope also thrives in summer with the worst heat and humidity even in the Southeast and Southwest! Liriope is tolerant of a wide range of soil types but prefers clay/loam and will display best growth in fertile soils with average water but extremely drought tolerant in shaded areas! For the home garden, the species spreads slowly so you shouldn't leave very much room in-between Liriope plants or you will be waiting many years for the patch to fill in. Weeds can be a problem in that open area between plants if spacing is too wide. We recommend 12-18" spacing for a larger area. The only problem we have seen is a mysterious crown-rot disease in well-irrigated gardens. This liriope (Liriope muscari 'Royal Purple') does not spread very quickly or much at all compared to Spreading Liriope / Monkey Grass (Liriope spicata) This is a real trooper for the dry shade garden!