How to Propagate Lilaeopsis brasiliensis

Brazilian micro sword multiplies by runners that readily form and spread laterally into a grassy lawn. Learn to split the mat into plugs and replant.

Overview

Lilaeopsis brasiliensis, the Brazilian micro sword, is a grass-like foreground plant from South America with pale green leaves on short stems. It reaches only about 4-7 cm tall and slowly spreads to form a dense lawn, making it a favourite for foreground carpets.

Propagation Method (Runners / Division)

The plant sends out horizontal runners (stolons) that creep through the substrate and sprout new grassy shoots, gradually filling open areas. To propagate, you divide the established mat into smaller plugs, each holding a cluster of leaves with roots and a section of runner, and replant them across the substrate.

Step-by-Step

Let the planting establish until runners have spread and formed a connected grassy mat.
Lift a section of the lawn and gently free the roots and runners from the substrate.
Split the section into small plugs, each with several blades, roots, and a piece of runner.
Replant the plugs into nutrient-rich substrate, anchoring the roots so the plugs do not float free.
Space the plugs a couple of centimetres apart so their runners can reconnect into a continuous lawn.

Conditions for Healthy Growth

Lilaeopsis brasiliensis grows best with very bright light, which keeps it low and encourages dense lateral spread. It is more tolerant of lower light than most carpet plants but grows slowly under those conditions. Optimal development depends on tropical temperatures, a nutrient-rich substrate, and supplemental CO2.

Maintenance

Trim the lawn roughly every two weeks to keep it level and remove overgrown or yellowing blades. Periodically divide crowded areas and replant the plugs into thin spots to maintain an even, dense carpet and stimulate fresh runner growth.

Common Challenges

Slow establishment: mat formation takes time, so expect weeks before runners knit together.
Thin or leggy growth: usually a sign of insufficient light; increase intensity.
Floating plugs: ensure roots are firmly anchored when replanting divided sections.