Monkey grass provides a resilient and attractive groundcover solution for many landscapes. These evergreen perennials, belonging to the genera Liriope and Ophiopogon, are prized for their grass-like foliage and ability to tolerate a wide range of growing conditions, making them a popular choice for borders, edging, and mass plantings. Successful establishment depends on proper planting technique and preparation. This guide ensures your monkey grass takes root and develops into the dense, thriving groundcover you seek.
Identifying the Right Location and Soil Preparation
Selecting the correct site is the first step toward successful planting. Monkey grass performs best in areas receiving filtered sunlight to partial shade, which helps maintain rich foliage color and prevents scorching in hot climates. Full sun exposure is tolerated, especially by Liriope muscari varieties, but requires increased watering during establishment. Ophiopogon varieties, such as mondo grass, prefer more shade.
The plant tolerates various soil types, including clay and sand, but requires well-draining conditions as it will not survive in waterlogged areas. A slightly acidic to neutral pH range of 6.0 to 7.5 is preferred for optimal growth. Before planting, loosen the soil to a depth of 6 to 8 inches to encourage root penetration. If the soil is heavily compacted or lacks organic matter, incorporate a 2- to 3-inch layer of compost to improve drainage and nutrient retention.
Step-by-Step Guide to Planting Monkey Grass
If using divisions or bare-root clumps, gently separate large clumps into smaller sections. Ensure that each new plantlet retains a healthy cluster of roots and at least three to five shoots. Trimming the foliage back to four to six inches helps reduce moisture loss and stress immediately following transplanting.
Dig holes that are approximately twice the width of the root ball, but not deeper than the root mass itself. Set the plant so that the crown—where the foliage meets the roots—remains level with or slightly above the surrounding soil line. Burying the crown can lead to rot, compromising the plant’s health.
Spacing is determined by how quickly you desire a dense groundcover. For rapid mat formation, space the plantlets six to eight inches apart. For clumping varieties like Liriope muscari that spread more slowly, space them 10 to 12 inches apart. Once positioned, gently backfill the hole with the prepared soil, tamping lightly to eliminate air pockets around the roots.
Watering and Post-Planting Establishment
Immediate and thorough watering is required after planting to settle the soil around the roots and begin establishment. Consistent moisture is important during the first four to six weeks while the root system develops. Avoid making the area soggy or waterlogged.
During this period, provide the plant with about one inch of water per week, checking the soil moisture two inches deep before watering again. Applying a thin layer of organic mulch around the newly planted areas helps conserve soil moisture and regulate temperature. Ensure the mulch is kept a few inches away from the plant crowns to prevent excessive moisture retention and fungal issues. Once established, monkey grass is drought-tolerant and only requires supplemental watering during extended dry periods.