Pearl Weed (Micranthemum micranthemoides)

Pearl Weed (Micranthemum micranthemoides) is a popular freshwater aquarium plant known for its small bright green leaves, dense growth, and versatility in aquascaping. With regular trimming, it can be maintained as a compact foreground carpet or allowed to grow taller as a lush midground or background plant.

Pearl Weed grows relatively quickly under suitable conditions and responds especially well to good lighting, nutrients, and CO₂ supplementation. Its fine texture and vibrant green coloration make it an excellent choice for planted aquariums, nano tanks, shrimp tanks, and nature-style aquascapes.

Key Features

• Small, bright green leaves
• Dense and attractive growth
• Fast-growing aquarium plant under good conditions
• Can be used as a foreground, midground, or background plant
• Can form a compact carpet with regular trimming
• Easy to propagate from stem cuttings
• Excellent for nano and planted aquariums
• Provides useful cover for shrimp and small fish

Plant Care

• Scientific Name: Micranthemum micranthemoides
• Common Name: Pearl Weed
• Difficulty: Easy to Moderate
• Growth Rate: Moderate to Fast
• Lighting: Medium to High
• CO₂: Not Essential, but Recommended for Best Growth
• Placement: Foreground / Midground / Background
• Propagation: Stem Cuttings
• Aquarium Type: Freshwater

Planting Guide

Plant Pearl Weed directly into a suitable aquarium substrate. For a dense appearance, separate the plant into smaller portions and plant them with a little space between each group. The stems will gradually branch and fill the surrounding area.

For carpeting, trim the plant regularly and keep it relatively short. Repeated trimming encourages additional branching and helps create a dense, bushy foreground.

Lighting & CO₂

Pearl Weed can adapt to a range of planted aquarium conditions, but medium to high lighting encourages denser and more compact growth. CO₂ supplementation is not strictly required, but it can significantly improve growth rate and overall plant density.

Maintenance

Regular trimming is recommended because Pearl Weed can grow quickly once established. Trim taller stems to maintain the desired height and shape. Healthy cuttings can be replanted directly into the substrate to expand the planted area.

Ideal For

• Planted aquariums
• Nano aquariums
• Foreground carpeting
• Midground and background planting
• Nature-style aquascapes
• Shrimp aquariums
• Peaceful community tanks

Pearl Weed (Micranthemum micranthemoides) is an excellent choice for aquarists looking for a versatile, vibrant green, and relatively fast-growing aquarium plant. Whether maintained as a compact carpet or allowed to develop into a dense bush, Pearl Weed adds beautiful texture and natural greenery to freshwater aquascapes.