

Hygrophila polysperma, commonly known as Dwarf Hygro or Indian Waterweed, is a robust and adaptable stem plant native to South and Southeast Asia. Its rapid growth and tolerance to a wide range of water conditions make it an excellent choice for both novice and experienced aquarists. With its vibrant green lanceolate leaves, this species adds a lush, natural backdrop to freshwater aquariums.
Scientific Name: Hygrophila polysperma
Common Names: Dwarf Hygro, Indian Waterweed, Indian Swampweed
Origin: South and Southeast Asia
Growth Habit: Fast-growing, upright stem plant
Leaf Characteristics: Lanceolate leaves, 4–8 cm long, vibrant green; may develop reddish hues under high light
Lighting Requirements: Low to high intensity
CO₂ Requirement: Not essential; benefits from supplementation
Placement: Midground to background
Water Parameters:
Temperature: 18–30°C (64–86°F)
pH Level: 5.0–8.0
Hardness: Soft to moderately hard water.
Beginner-Friendly: Thrives in various water conditions with minimal care.
Rapid Growth: Quickly establishes itself, ideal for newly set-up aquariums.
Aesthetic Appeal: Provides a lush green backdrop, enhancing the natural look of aquascapes.
Habitat Enhancement: Offers shelter and breeding grounds for small fish and invertebrates.
Water Quality Improvement: Assists in nutrient absorption, contributing to a balanced aquarium ecosystem.
Lighting: Adaptable to various lighting conditions; higher intensity promotes denser growth and reddish leaf hues.
CO₂ and Fertilization: While not mandatory, CO₂ supplementation and regular dosing with macro- and micronutrients enhance growth and vitality.
Substrate: Plant in nutrient-rich substrate to support robust root development.
Water Flow: Prefers gentle water movement to prevent debris accumulation on leaves.
Propagation: Easily propagated by cutting healthy stems and replanting them into the substrate.
Can Hygrophila polysperma thrive without CO₂ supplementation?
Yes, it can grow without CO₂, but supplementation enhances growth and leaf density.
How tall does Hygrophila polysperma grow?
Under optimal conditions, it typically reaches heights of 25–40 cm (10–16 inches).
Is Hygrophila polysperma suitable for beginners?
Absolutely. Its adaptability and low maintenance make it ideal for novice aquarists.
How often should I trim Hygrophila polysperma?
Regular trimming every few weeks helps maintain its shape and prevents it from overshadowing other plants.
Can it be grown emersed?
Yes, Hygrophila polysperma can adapt to emersed conditions in high-humidity environments and may produce small, bluish-white flowers.
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