Details

Hygrophila corymbosa var. siamensis

A Fast-Growing Background Plant with Vibrant Green Foliage

Description

Hygrophila corymbosa var. siamensis, commonly known as Siam Hygrophila, is a beautiful and hardy freshwater aquarium plant prized for its lush green leaves, rapid growth, and ease of care. Native to Southeast Asia, this versatile stem plant is an excellent choice for beginners and experienced aquascapers alike.

Its upright growth and broad leaves make it an ideal background plant, providing shelter for fish, shrimp, and fry while helping to absorb excess nutrients and improve water quality. Under optimal lighting and nutrient-rich conditions, Siam Hygrophila develops dense, vibrant foliage that creates a lush, natural appearance.

Care Level

Easy

Temperament

Peaceful

Size

Typically grows 12–20 inches (30–50 cm) tall and can spread several inches wide through regular pruning and propagation.

Lifespan

Perennial with proper care and routine trimming.

Diet

Hygrophila corymbosa var. siamensis absorbs nutrients primarily through its roots and leaves. For best growth, provide:

• Comprehensive liquid fertilizer
• Nutrient-rich substrate (recommended but not required)
• Root tabs for heavily planted aquariums
• Iron and micronutrient supplementation to promote vibrant green foliage

Additional CO₂ is beneficial but not required.

Tank Size

20 gallons or larger is recommended, although it can be grown successfully in smaller aquariums with regular trimming.

Water Parameters

• Temperature: 72–82°F (22–28°C)
• pH: 6.0–7.8
• GH: 3–15 dGH

This adaptable plant thrives in a wide range of freshwater conditions and is forgiving of minor fluctuations.

Behavior & Compatibility

Hygrophila corymbosa var. siamensis is compatible with nearly all peaceful freshwater fish, shrimp, and snails. Its dense foliage provides excellent cover for fry and shy species while helping reduce algae by competing for excess nutrients.

This plant is ideal for:

• Community aquariums
• Aquascapes
• Shrimp tanks
• Planted aquariums
• Breeding setups
• Nature-style aquariums

Notes

• Excellent background plant for medium to large aquariums.
• Fast-growing and effective at reducing excess nutrients.
• Easily propagated by cutting healthy stems and replanting them.
• Regular trimming encourages bushier, fuller growth.
• CO₂ is optional but promotes faster growth and larger leaves.
• Suitable for beginners and experienced aquarists alike.
• Helps create a lush, natural aquascape while improving overall aquarium stability.