Mattogrosso Water Milfoil (Myriophyllum mattogrossense)

Mattogrosso Water Milfoil

Myriophyllum mattogrossense

Feathery submerged foliage brings soft movement to aquarium waters. Aquatic herbaceous perennial; common name: Mattogrosso water milfoil.

Partial sun
N/A/week
Beginner
🌱

Plant Needs

☀️
Sunlight Moderate to bright artificial aquarium light or indirect natural light; avoid intense direct sunlight that triggers algae blooms
💧
Watering Maintain clean, well-oxygenated freshwater with 10–20% partial water changes weekly to remove excess nutrients
🌡️
Temperature Thrives in warm tropical to subtropical water temperatures; avoid sudden temperature fluctuations
🔍

Characteristics

  • Leaf: Submerged leaves are whorled, finely divided into feathery segments; emergent leaves are smaller and simpler
  • Flower: Tiny, pale pink or white emergent flowers in axillary clusters
  • Stem: Slender, branching submerged stems with flexible growth habit
🛠️

Care Guide

Watering

Maintain consistent water level; perform weekly partial water changes

Fertilization

Dose iron-rich liquid aquatic fertilizer every 2 weeks. Target iron and potassium to support vibrant foliage color and growth

Composted banana peel aquarium tea:Soak fully composted banana peels in dechlorinated water for 24 hours; dilute 1:50 before adding to aquarium to avoid nutrient spikes
Pruning
  • Trim overgrown stems to maintain desired shape and prevent shading of lower foliage
  • Remove yellowing or decaying leaves promptly to preserve water quality
  • Thin dense growth to improve water circulation and light penetration
⚠️

Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: No toxic effects on cats

Humans: No documented toxic effects on humans

📖

Garden Uses & Culture

Culture: N/A

Usage: Aquarium ornamental plant; provides shelter for small fish and aquatic invertebrates