Super Blue Liriope, also known as Super Blue Lilyturf or monkey grass, is a popular evergreen perennial valued for its grass-like foliage and low-maintenance nature. It forms dense, clumping mounds of deep green leaves, typically reaching 18 to 20 inches in height and spread. This plant is a favored choice for gardeners due to its versatility in landscaping, its ability to tolerate various conditions, and its attractive purple-blue flower spikes that emerge in late summer and fall. Once established, Super Blue Liriope demonstrates good drought tolerance, making it a resilient option for many garden settings.
Understanding Super Blue Liriope’s Needs
Super Blue Liriope thrives in a range of light conditions, from partial shade to full sun. While it can tolerate some full sun, it generally flourishes with four to six hours of sunlight per day, or in partial to full shade where foliage may appear darker green. This adaptability makes it suitable for mixed light situations within a landscape.
The plant prefers well-draining soil that is moderately rich in organic matter. It adapts to a wide range of soil types, including clay and sandy soils, and tolerates a pH range of 6.0 to 7.0. Super Blue Liriope has average water needs, becoming drought tolerant once established.
During its initial growing season, consistent watering is important for root development. Fertilize annually in spring with a balanced, slow-release fertilizer. Organic compost can also enhance soil nutrients.
Planting and Establishment
Proper site preparation is important for successful planting. Begin by digging a hole that is twice the width of the plant’s root ball and deep enough so that the top of the root ball will be level with the surrounding ground. Amending the native soil with rich gardening soil or organic matter can provide extra nutrients and support initial growth. If the soil is heavy clay, mixing in pine bark mulch can improve drainage and aeration.
The ideal time for planting Super Blue Liriope is early spring or fall. After placing the plant in the prepared hole, backfill with the amended soil, gently pressing down to remove any air pockets. Water generously immediately after planting to settle the soil around the roots.
For groundcover, space plants approximately 8 to 12 inches apart to allow for future growth and a seamless appearance. If a more defined, mounding habit is desired, planting them 20 to 24 inches apart. During the first two months after planting, water the plant twice a week to ensure a strong root system develops.
Ongoing Maintenance
In late winter or early spring, before new growth emerges, cut back old foliage to 2 to 3 inches above the ground. This removes damaged or dead leaves and encourages fresh, healthy growth, contributing to a tidier appearance. Trimming can be done with shears, or for larger areas, a lawnmower on a high setting.
Keeping the area around the plants free of weeds is important to prevent competition for nutrients and moisture. Mature clumps can be divided every two to three years in early spring to rejuvenate plants or propagate new ones. Division helps prevent overcrowding, improves plant vigor, and offers a straightforward method for increasing your stock.
Addressing Common Challenges
Slugs and snails may occasionally feed on the foliage, creating ragged sections. Removing debris from around the plants and using diatomaceous earth can help deter these pests.
Diseases like leaf and crown rot, often caused by the pathogen Phytophthora palmivora, can occur, especially in poorly drained or overwatered soil. Symptoms include yellowing foliage that progresses to browning, and discolored, decaying roots. To prevent these issues, ensure adequate drainage, avoid overwatering, and consider planting in raised beds if soil conditions are problematic. Removing affected plants promptly can help prevent the spread of disease.
Environmental stress, such as excessive sun exposure, can lead to yellowing or browning of leaves. Adjusting watering practices or providing afternoon shade can help alleviate this. If flowering is sparse, it might be due to insufficient sunlight, as more abundant blooms occur in sunnier locations.