Stem Plant

Egeria densa, commonly known as Anacharis or Brazilian Waterweed, is a very fast-growing and extremely popular stem plant. It is widely recommended for beginners due to its hardiness, vigorous nutrient absorption, and excellent water oxygenation capabilities. While usually planted in bunches in the substrate, it draws almost all of its nutrients from the water column. It thrives in cooler water, making it a staple for unheated tanks, though its delicate leaves make it highly palatable to goldfish, turtles, and other herbivorous species.

An attractive and relatively undemanding stem plant featuring small, round, bright green leaves with distinctive parallel venation. It grows straight up toward the light and branches out to form dense bushes when trimmed regularly, making it an excellent background or midground accent.

Mayaca fluviatilis is a delicate, fine-leaved stem plant native to the wetlands of the Americas. Despite its common name 'Bog Moss', it is a true vascular plant. It is prized for its bright green, needle-like foliage that creates beautifully textured, dense bushes in the aquascape. It requires good lighting and adequate iron to prevent its tips from turning pale.

Bonsai Rotala, often historically traded under the erroneous name Ammannia sp. 'Bonsai', is a relatively slow-growing, compact stem plant. It grows strictly upright with thick, fleshy stems and small, rounded leaves that can develop a reddish-orange hue under intense lighting. Its compact nature and slow growth rate make it an excellent choice for midground accents or even foreground placement in larger aquariums.

A striking, robust stem plant well known for its use in creating distinct 'streets' in Dutch-style aquascapes. While it grows tall and produces bright red flowers in its emersed form, the submerged form produces compact, light green foliage that grows relatively slowly compared to most other stem plants.

A classic, fast-growing stem plant known for its highly divided, feathery green leaves. While often sold to beginners, it requires relatively high light to prevent the lower portions from deteriorating and shedding needles. It forms dense, bushy thickets that provide excellent refuge for fry and shrimp.

A versatile stem plant with distinctive round, coin-like opposite leaves. While it forms a creeping carpet in its terrestrial form, it typically grows rigidly upward when submerged in an aquarium. It is particularly valued for its robust nature and ability to thrive in cooler water temperatures and unheated setups.

A classic, highly adaptable stem plant known for its oval leaves that develop attractive reddish hues under good lighting. It is one of the easiest red plants to grow in the aquarium, making it a popular choice for beginners looking to add contrast to their aquascape.

Ludwigia glandulosa is a striking, deep red to purple stem plant. Unlike many other Ludwigia species, its leaves grow alternately along the stem rather than in opposite pairs. It is a demanding plant that requires high light intensities, nutrient-rich conditions, and CO2 injection to maintain its vibrant coloration and prevent the shedding of lower leaves.

Penthorum sedoides, commonly known as Ditch Stonecrop, is a North American perennial that thrives both emersed in boggy conditions and submersed in the aquarium. Unlike many stem plants that become leggy, it is known for developing extremely dense, compact, and upright submersed stems featuring light-green, distinctively serrated leaves. It is relatively undemanding and adaptable, making it an excellent and unique bushy midground choice.

Pogostemon helferi, commonly known as Downoi or 'Little Star', is a unique stem plant that grows with a very compact, rosette-like appearance. Its crinkled, star-shaped leaves make it a highly sought-after foreground or midground accent in the aquascape. It requires stable conditions, adequate lighting, and CO2 injection to prevent melting and maintain its signature short, bushy form.

Limnophila sessiliflora is an exceptionally hardy, fast-growing stem plant often used as a beginner-friendly alternative to the more demanding Cabomba. Its bright green, finely divided leaves provide an excellent refuge for small fish and shrimp. Due to its rapid growth, it thrives in low-tech setups but will require frequent trimming to prevent it from reaching the surface and shading neighboring plants.

Hygrophila polysperma is an exceptionally hardy and fast-growing stem plant, making it an ideal choice for beginners. It adapts to almost any water parameter and lighting condition, though it requires frequent trimming due to its rapid, almost weedy growth.

A highly popular and versatile stem plant that adapts well to a variety of aquarium conditions. In its emersed state, it features round green leaves, but when submerged, the leaves become narrow and can develop pink to red hues depending on light intensity and nutrient limitation. Frequent trimming encourages dense, bushy growth.

Micranthemum umbrosum, commonly known as Giant Baby Tears, is a fast-growing stem plant characterized by delicate, round, bright green leaves. When provided with strong lighting and CO2 supplementation, it forms dense bushes ideal for the midground or background. It requires frequent trimming to prevent the dense upper growth from shading out its own lower stems, which can lead to leaf loss and stem rot at the base.

Rotala macrandra is a stunning, but highly demanding, stem plant known for its large, undulating, brightly colored leaves. To achieve its signature vibrant red coloration and prevent stunting or leaf melting, it requires intense lighting, strictly managed CO2 injection, and a robust nutrient dosing regimen.

Nesaea crassicaulis, now often classified as Ammannia crassicaulis, is a striking African stem plant known for its thick stems and beautiful golden-orange to deep red foliage. It is a demanding species that requires high light intensity, regular nutrient dosing (particularly iron and micronutrients), and carbon dioxide supplementation to prevent stunting and achieve its vibrant colors. When grown well, it forms an excellent focal point in the midground or background of the aquascape.

Limnophila hippuridoides is a striking stem plant known for its vivid purplish-red leaves and dense, whorled growth pattern. When grown under optimal lighting and CO2, its vibrant undersides provide excellent contrast in the aquascape. The emersed form is notable for emitting a strong, pleasant pine-like or lavender fragrance when the leaves are crushed.

A classic, fine-leaved stem plant that provides excellent refuge for fry and creates a densely textured, fluffy backdrop. It is strictly aquatic and requires high light, clean water, and good nutrient availability to prevent the lower leaves from detaching or melting.

Najas guadalupensis, widely known as Guppy Grass, is an extremely fast-growing and undemanding aquatic plant. It forms dense tangles that provide exceptional hiding spaces for fry and shrimp. While it can be planted loosely in the substrate, it is most frequently used as a free-floating plant in breeding or low-tech setups. Its stems are very delicate and break easily, but every fragment will quickly grow into a new plant.

An incredibly fast-growing, fully aquatic, rootless stem plant. Hornwort acts as a massive nutrient sponge, absorbing compounds directly from the water column. Because it completely lacks true roots, it is biologically a floating plant and will rot at the base if buried in substrate. While it can be wedged into hardscape or weighted down, it is most successfully utilized left free-floating. It is highly valued in breeding setups, as its dense, needle-like foliage provides an exceptional refuge for fry and shrimp. It is sensitive to sudden changes in water parameters and may temporarily shed its needles if shocked, but usually recovers quickly.

A popular, fast-growing creeping stem plant known for its distinct, miniature clover-like leaves. It forms dense, cascading mounds or carpets and can be planted in the substrate or wedged into hardscape.

Blyxa japonica is an obligate aquatic plant that resembles a grassy rosette but is biologically a stem plant with tightly packed internodes. Under high light and with CO2 supplementation, it forms dense, bushy, golden-green to reddish thickets, making it an extremely popular midground transition plant in aquascaping. It develops a massive root system and benefits significantly from nutrient-rich substrates.

A light-green, trailing stem plant with delicate ivy-like leaves. It thrives in cooler water temperatures and grows rapidly under adequate lighting, often requiring frequent trimming to maintain a bushy appearance and prevent leggy growth.