Five Shocking Reasons Monkey Grass is Ruining Your Garden (And What to Do!) - American Beagle Club
Five Shocking Reasons Monkey Grass Is Ruining Your Garden (And What to Do!)
Five Shocking Reasons Monkey Grass Is Ruining Your Garden (And What to Do!)
If you’ve recently tried planting monkey grass—scientifically known as Liriope muscari—you might be surprised to learn that this popular ornamental plant is far from the garden hero it’s advertised to be. While its dark green, sword-like leaves and bold purple flower spikes can enhance borders and edging, monkey grass is quietly wreaking havoc on native ecosystems, smothering biodiversity, and creating maintenance nightmares for gardeners.
Here are five shocking reasons monkey grass might be ruining your garden—and practical solutions to restore balance.
Understanding the Context
1. Monkey Grass Spreads Uncontrollably, Outcompeting Native Plants
Though attractive, monkey grass is an aggressive ground cover that spreads rapidly via stolons and rhizomes. Left unchecked, it forms dense monocultures, crowding out native wildflowers, shrubs, and grasses essential for local wildlife. This suppression reduces plant diversity, destabilizes soil, and eliminates food sources for pollinators and birds.
What to Do:
- Pull or cut back monkey grass early in the growing season.
- Install physical barriers like landscape fabric beneath new plantings.
- Replace infested areas with native ground covers such as creeping phlox or wild ginger.
Key Insights
2. It Invades Lawns and Garden Borders, Ruining Aesthetics
Monkey grass spreads beyond designated borders, creeping into lawns, flower beds, and ornamental borders. Its persistent growth creates patchy, unkempt textures that detract from your carefully designed landscape. Unlike tidy, manageable ground covers, monkey grass lacks definition and becomes aggressive in favorable conditions.
What to Do:
- Use a sharp edge separation (metal or plastic barrier) to contain its growth.
- Hand-pull seedlings aggressively during early spring before it matures.
- Choose aggressive but native alternatives like sweet woodruff for strong, controlled coverage.
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3. It Attracts Invasive Insects That Harm Local Flora
Monkey grass harbors pests such as aphids and mites that can spread to nearby plants, causing damage and weakening garden resilience. These pests undermine plant health and often require pesticide use, harming beneficial insects and pollinators you want to protect.
What to Do:
- Inspect plants near monkey grass regularly.
- Apply insecticidal soap or neem oil sparingly to small infestations.
- Prioritize organic pest control and plant pest-resistant species.
4. Its Dense Mats Hinder Soil Health and Water Absorption
Thick stands of monkey grass impede water infiltration and restrict air circulation in the soil, leading to compaction, alienation, and poor drainage. This creates ideal conditions for fungal diseases and root rot in adjacent plants, reducing overall garden vitality.
What to Do:
- Aerate soil under dense areas with a garden fork or core aerator.
- Amend soil with organic matter to improve structure and drainage.
- Reduce planting density and incorporate mulch to regulate moisture.
5. It Undermines Pollinators and Biodiversity
By dominating garden space, monkey grass reduces habitat for native plants that sustain bees, butterflies, and birds. Its non-native, sterile blooms offer little nectar value, starving pollinators of natural food sources during critical seasons. This loss of biodiversity weakens the entire ecosystem your garden depends on.
