Big Blue Liriope | Monkey Grass

Big Blue Liriope | Monkey Grass
A fast-growing, ultra-low-maintenance ground cover with bold purple-blue flower spikes and year-round dark green foliage—built for every corner of the landscape.

Plant Highlights

• Type: Perennial / Ornamental grass-like ground cover
• Light: Full sun to full shade
• Water: Average; widely adaptable once established
• Temperature: Zones 5–10 / Cold, heat, drought, salt, and humidity tolerant
• Growth: 1–2 ft tall and wide / Fast growth rate
• Pet Safe: Yes—nontoxic  to mildly toxic if ingested in large amounts; no dermatological effect
• Origin: Native to Japan, Taiwan, and China

Why You'll Love It

• Stunning purple-blue flower spikes rise above the foliage in late summer, lasting up to two months—followed by showy black berries that attract birds
• Thrives in virtually any soil type—clay, sandy, rocky, or shallow—and tolerates full shade, foot traffic, and pollution
• Deer-resistant, rabbit-resistant, and pest-resistant, making it one of the most dependable ground covers available

Care Tips

• Trim back old foliage in late winter to early spring before new growth emerges, cutting down to a few inches above the crown
• Feed with a slow-release fertilizer in early spring to encourage vigorous new growth and strong flowering
• Divide outer clumps every few years if you want to manage spread or propagate new plants

Shipping

• Ships within 1–3 business days
• Carefully packed to protect roots and foliage in transit
• Weather holds may apply during extreme heat (95°F+) or cold (34°F and below)

Frequently Asked Questions

How big does Big Blue Liriope get?
Expect arching clumps 1–2 feet tall and 1–2 feet wide. It forms a tidy mound that works beautifully for edging, mass plantings, and containers.

Does Big Blue Liriope spread?
It is rhizomatous and will slowly expand over time, but at a manageable pace—not aggressively like some monkey grass types. Edge the bed or divide every few years to keep it in check.

When should I cut it back?
Late winter to early spring, before new growth pushes. Shear or hand-cut old leaves down to a few inches above the crown to keep the plant looking clean and encourage strong new growth.