The top another name for mondo grass is monkey grass, and you'll also hear dwarf lilyturf and snake's beard. These mondo grass common names cause real confusion at stores because other plants share the same tags.
I learned this the hard way when I asked for monkey grass at my local nursery and walked out with Liriope instead. The plants look similar at first glance, but they're different species with different growth habits and sizes. It took me a full season to realize I had the wrong plant in my shade bed. That mistake cost me both time and money I could have saved with one simple step at the register.
The monkey grass label is the biggest source of mix-ups. Both mondo grass and Liriope muscari get called monkey grass across the southern United States. Nursery staff, garden center tags, and even some online stores use the name for either plant without telling you which one you're getting. If you ask for monkey grass, you have about a 50/50 chance of getting the species you want.
The scientific name behind mondo grass tells an interesting story. Ophiopogon japonicus comes from the Greek words ophis meaning snake and pogon meaning beard. That origin explains the common name snake's beard that you'll hear in some regions. The japonicus part tells you this plant came from Japan, where it has grown wild in forest understories for thousands of years.
Monkey Grass Mix-Up
- The problem: Both Ophiopogon japonicus and Liriope muscari get called monkey grass at nurseries across the country.
- NC State data: These two species are among the most confused plants in the landscape trade due to shared common names.
- Your fix: Ask for the plant by its scientific name Ophiopogon japonicus to make sure you get true mondo grass.
Dwarf Lilyturf Label
- The problem: Regular lilyturf refers to Liriope, so the dwarf version confuses buyers who think it's a smaller Liriope.
- How to tell apart: Mondo grass has thinner leaves and stays shorter than Liriope, with smaller flowers and blue berries.
- Your fix: Check the leaf width at the store. Mondo grass leaves are about 1/8 inch wide while Liriope runs 1/4 inch or more.
Similar Species at Stores
- Related plants: O. intermedius, O. jaburan, and O. planiscapus (black mondo) all get lumped under the mondo grass label.
- UF/IFAS notes: Some stores sell Aztec grass under the mondo name, adding yet another plant to the confusion list.
- Your fix: Read the plant tag for the full Latin name, and check that it says Ophiopogon japonicus if you want standard mondo.
When you shop for mondo grass, take these steps to avoid bringing home the wrong plant. Write down Ophiopogon japonicus on your phone before you go. Show the name to the nursery staff and ask them to confirm the plant matches. Look at the leaf width since mondo grass has thin, fine blades about 1/8 inch across while Liriope has wider, strappy leaves.
You can also check the plant's height. Standard mondo grass tops out at 6-12 inches, while Liriope grows to 12-18 inches or taller. The flower spikes differ too. Mondo grass flowers hide inside the foliage close to the ground. Liriope sends up tall purple spikes that stick well above the leaves. These quick visual checks take seconds at the store.
I now keep a photo of both species on my phone for quick reference at the nursery. The monkey grass confusion gets worse in spring when stores rush to stock shelves and labels get mixed up. A few seconds of checking saves you a full season of growing the wrong plant. Your shade garden deserves the right species in every spot, so take the time to verify before you buy.
Read the full article: Mondo Grass Care and Growing Guide
