Aquarium Plant Profiles

A bulbous aquatic plant known for its floating lily-like leaves and highly fragrant white flowers. Native to South Africa, it thrives in cooler water temperatures and is commonly used in unheated aquariums and outdoor ponds. Because it sends broad leaves to the water's surface, it casts significant shade and provides excellent surface cover.

Didiplis diandra, commonly known as Water Hedge, is a delicate and attractive stem plant native to North America. It features fine, cross-opposite needle-like leaves that form dense, bushy structures. Under high light with adequate CO2 and iron, the leaf tips develop striking orange to deep reddish-purple hues. It is highly valued for creating distinct textures in the midground or background, though it can be somewhat demanding, requiring good water circulation to prevent debris buildup in its dense thickets and sufficient lower lighting to prevent the bottom leaves from rotting.

A remarkably fast-growing, free-floating aquatic plant known for its bulbous, spongy leaf stalks and striking purple flowers. Its extensive feathery root system provides unmatched filtration, nutrient uptake, and refuge for fry. However, its highly aggressive growth rate and massive shade cast require extremely frequent culling, making it more common in ponds or large open-top aquariums.

Crinum thaianum is a large, hardy bulb plant native to fast-flowing streams in southern Thailand. Known for its incredibly long, tough, ribbon-like leaves, it can easily reach the surface of most aquariums and trail across the top, providing excellent shade and cover. It forms a massive root system and requires the bulb to be planted only partially into the substrate to prevent rotting. Its robust nature makes it highly resistant to herbivorous fish.

A rare example of a true orchid that can adapt to fully submerged aquarium conditions. Spiranthes odorata features thick, fleshy roots and bright green strap-like leaves. While it naturally thrives as a marginal or marsh plant where it produces a fragrant white flower spike, it adapts well to aquatic life under water, though it grows slowly and benefits significantly from a nutrient-rich substrate.

Ludwigia palustris is a highly adaptable and popular stem plant known for its striking red and green foliage. It is one of the easiest red plants to grow in the aquarium, making it an excellent choice for beginners looking to add color to their aquascape. It grows rapidly, branching readily to form dense, bushy clusters when trimmed regularly.

Samolus valerandi, commonly known as Water Rose or Seaside Brookweed, is a charming, slow-growing rosette plant. In the aquarium, its bright green, spoon-shaped leaves form a compact, rose-like shape. While it can be grown submersed, it requires good lighting and cooler temperatures to thrive. It is notably tolerant of brackish conditions, reflecting its natural coastal habitat.

A fast-growing, free-floating aquatic fern characterized by small, round to oval leaves covered in stiff, water-repellent hairs. It possesses no true roots; instead, modified submerged leaves dangle in the water column to absorb nutrients. It acts as an excellent nutrient sink and provides dense surface cover, making it ideal for shading the aquarium and offering refuge for fry and shrimp. It requires calm surface waters to thrive and multiplies rapidly.

Hottonia palustris, commonly known as the Water Violet, is an elegant stem plant native to Europe and northern Asia. It features unique, deeply pinnate, feather-like bright green leaves. In the aquarium, it creates a highly textured focal point in the midground or background. It thrives in slightly cooler water temperatures and benefits significantly from CO2 injection and moderate to high lighting, which encourages dense, bushy growth.

A highly popular, hardy stem plant known for its deeply lobed, fern-like submerged foliage. It is exceptionally forgiving for beginners and absorbs excess nutrients rapidly, making it excellent for outcompeting algae. Its leaf shape changes drastically depending on light levels and whether it is grown emersed or submerged.

Widely known as the smallest vascular plant on Earth, Wolffia arrhiza appears as tiny, rootless green grains floating on the water's surface. It is extremely fast-growing and often cultivated as a highly nutritious, protein-rich food source for herbivorous fish and goldfish. However, if unmanaged, it can explosively blanket the entire water surface and block all light to the plants below.

Elodea canadensis is an extremely hardy, fast-growing stem plant renowned for its oxygenating capabilities. While it can tolerate a wide range of water conditions, it particularly thrives in cooler temperatures and is often used in coldwater setups or unheated tanks. Its dense growth provides excellent refuge for fry and shrimp, though it requires frequent trimming to prevent it from overtaking the aquarium.

A highly popular aquatic moss known for its distinct downward-drooping growth habit, reminiscent of a miniature weeping willow tree. It is most effective when attached to driftwood or overhanging hardscape to emphasize its cascading form.

Cryptocoryne wendtii is one of the most popular and adaptable rosette plants in the aquarium hobby. Commonly traded in color varieties such as 'Red', 'Green', and 'Brown' (which share identical care and sizing), it forms deep, robust roots and thrives in a wide range of water parameters. While prone to 'crypt melt' when first introduced to new water chemistry, it recovers quickly from its established root system.

Hydrocotyle verticillata is a unique stoloniferous plant characterized by its circular, umbrella-like leaves that grow from a creeping runner. In the aquarium, it requires high light to maintain a low, compact profile; under lower light, its stems will stretch significantly toward the surface. It is highly valued for creating distinct visual contrast in the foreground or midground.

Rotala wallichii is an elegant, highly sought-after stem plant known for its fine, needle-like foliage that develops striking pink, purple, and red hues under optimal conditions. It is notoriously demanding, requiring intense lighting, CO2 injection, and soft, slightly acidic water to thrive and prevent its delicate lower leaves from melting.

Cryptocoryne x willisii is a highly adaptable, slow-growing rosette plant native to Sri Lanka. Frequently confused in the aquarium trade with C. lucens and C. nevillii, it develops narrow, bright green leaves that form dense, bushy clusters. Once established, it develops a deep and extensive root system, making it an excellent and resilient foreground to midground plant. Like most Cryptocoryne species, it is prone to 'crypt melt' when transitioning to new environments but will reliably bounce back under stable conditions.

A dark green, trailing aquatic moss native to the Northern Hemisphere. It produces elongated, densely leaved fronds that resemble the drooping branches of a willow tree. It thrives in cooler water temperatures and moderate to high flow environments, making it an excellent choice for unheated setups or cool-water biotopes. It is highly valued for providing dense shelter for shrimp and fish fry.

Microsorum zippelii, often traded as Zippel's Fern, is an epiphytic fern closely related to the popular Java Fern. It features distinctively broad, lanceolate to elliptic leaves with prominent venation. In the aquarium, it is highly adaptable and robust, thriving in low-tech setups when attached to hardscape materials like driftwood or stone. Its tough leaf structure makes it resistant to most herbivorous fish.

Fissidens zippelianus, commonly known as Zipper Moss, is a delicate and highly attractive aquatic moss characterized by its tightly packed, feather-like fronds that resemble a zipper. It forms dense, dark green creeping mats on hardscape and provides excellent microhabitats for shrimp.