Ophiopogon Pusillus

Quick facts

Identity

Also known as

Dwarf Mondo Grass; Mondo Grass

Synonyms

Ophiopogon japonicus 'Pusillus'

Environment

Terrestrial

Native to

Japan, China, East Asia

Habitat

Shaded forest floors and woodland margins in humid subtropical and temperate East Asia

Sourcing

Aquacultured

Conservation

Not Evaluated

Care

Care level

Easy

Growth form

Rhizome

Max height

2 – 4 in (5.1 – 10 cm)

Spread

6 in (15 cm)

Growth rate

Slow

Placement

Foreground, Carpet

Water

Temperature

60 – 75 °F (16 – 24 °C)

Humidity

60 – 90%

Planting

Substrate

Nutrient-rich preferred

Feeds from

Roots

Fertilizer needs

Low

Colors

Green

Feeding & breeding

Propagation

Rhizome division, Splitting

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Care guide

Overview

Narrow, arching blades of dark green form dense, grass-like tufts that stay low and compact, useful for carpeting terrarium or paludarium foreground space. Growth is slow but steady in moist, well-draining substrate with low to moderate light. It is emersed-only, declining if kept submerged long term.

Care

Dwarf mondo grass forms neat, grass-like tufts of narrow dark green leaves that stay low and dense, making it useful for filling foreground space in terrariums and paludariums. It tolerates low to moderate light and grows slowly but steadily under stable humidity and moist, well-draining soil. Sudden changes in humidity, temperature, or lighting can stress the plant, so gradual acclimation after purchase is recommended.

Planting & trimming

Plant in moist, well-draining soil or terrarium substrate with the crown kept above the surface, since burying it can lead to rot. Works well as a foreground accent or small clump feature in paludariums and riparium banks, planted individually or in small groups for a miniature lawn effect. Trim only to remove old or damaged leaves, as growth is naturally compact and slow.

Fertilizing

A light dose of balanced liquid fertilizer or diluted terrestrial plant food during active growth supports fuller, greener foliage, though this species is not a heavy feeder. Deficiencies typically show as pale or yellowing leaf tips rather than dramatic discoloration. Overfeeding is unnecessary and can encourage algae or fungal growth on the moist substrate it prefers.

Propagation

Propagated by dividing mature clumps at the rhizome once they have filled out, separating sections with roots intact and replanting them in similarly moist, shaded substrate. Division is easiest during active growth periods and new divisions should be kept humid until established.

Problems

Extended submersion causes gradual decline and eventual rot, since this is not a true aquatic plant despite frequent mislabeling in the aquarium trade. Root or crown rot can develop if the substrate stays waterlogged or if the crown is buried too deeply when planted. Otherwise it is a hardy, low-maintenance grower with few pest issues in enclosed humid setups.

Sources

1. Ophiopogon Pusillus | Buce Plant
2. Ophiopogon: Ophiopogon Pusillus
3. Ophiopogon Pusillus Dwarf Mondo Grass | Terrarium & Paludarium Plants – Glass Aqua
4. Ophiopogon pusillus - Compact Ornamental Grass for Aquariums

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