If you’re looking to spruce up your aquarium but aren’t sure where to start, stem plants may be for you! Stem plants are plants that grow leaves outward from a central stem. This differs in comparison to ground cover plants or plants like ferns or swords that have one central stem for each leaf.
Stem plants have a ton of benefits, including improving water quality by increasing dissolved oxygen and reducing toxins. They also create nice hiding places for shrimp and small fish.
These reviews will help you find stem plants that are perfect for your tank and level of experience with planted aquariums, even if you’re a beginner!
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The 14 Best Aquarium Stem Plants – Reviews 2021
Ludwigia is one of the most popular and easy to find varieties of aquatic plants, and for good reason! It can survive low-light environments, but the more light Ludwigia receives, the more red or pink it will turn. In low-light, it will remain green.
These plants grow best in a nutrient-rich substrate with iron and CO2 supplementation. This environment, combined with high lighting, will create a fast-growing plant that requires routine pruning to keep it from taking over the tank and blocking light to lower plants.
It provides nice protection for fry and shrimplets and many fish enjoy swimming through its tall stalks.
Hornwort is well-loved in the aquatics community for its ability to grow very quickly and its unpalatableness to many fish. Even if you have fish that power through the tough spines of Hornwort, it usually grows back rapidly enough that fish cannot consume all of it.
These plants are low-maintenance and exceedingly easy to grow. Hornwort can be planted in substrate or floated and if you’re lucky, it may even produce small flowers for you! They prefer moderate lighting but can survive low-light, they will just grow more slowly.
Hornwort is one of the best plants available for absorbing nitrates and nitrites from aquarium tanks, making it a great option for over-stocked or heavy bio load tanks.
3. Water Wisteria
Water Wisteria is a nice low-maintenance stem plant that produces leaves based on heterophylly, meaning the shape of the leaves is dependent on the environment the plant is kept in. The leaves can appear rounded with jagged edges or more fern-like with multiple “fingers” per leaf.
These plants grow best with moderate lighting and may survive low-light but may not grow very well and will likely drop leaves. They are great at absorbing nutrients from the water, so supplementation is not required for fast growth.
Water Wisteria can reach heights of almost 2 feet, so it works best in larger tanks. It is not recommended for tanks smaller than 10-20 gallons. The fast growth rate means it may require routine pruning to keep it in check.
4. Golden Nesaea
Golden Nesaea is a relatively rare aquatic plant in the US, but it is increasing in popularity due to its easy level of care and beautiful, golden color. These plants can bring a lot of unique color to your tank and will pop in tanks with a dark substrate.
These are fast-growth plants under moderate to high light and will absorb nutrients from the substrate and water. They do not require supplementation but will grow faster with it.
Fish enjoy swimming through the leafy forests Golden Nesaea plants create and this is a nice plant for protecting fry. It reaches up to 12 inches in height, making it a good choice for medium to large tanks.
5. Bacopa caroliniana
Bacopa caroliniana is a hardy plant that can grow submerged or emersed, making it a good stem plant for short or open-top tanks. It can produce lovely blue flowers above the waterline. It is also called Lemon or Mint Bacopa because the oval-shaped leaves emit a lemony or minty smell if damaged.
This is an easy-care variety of stem plant that grows best with moderate lighting but can survive low-light environments with adequate nutrients in the water or supplemented
It can get quite tall and bushy so it will likely require routine trims, but it does make a great plant for fish to hide in.
6. Brazilian Pennywort
Brazilian Pennywort plants produce green, lily pad-shaped leaves. It grows rapidly under moderate lighting and reproduces readily, so just a couple of plants can fill your tank in a short period. It does not require supplementation but will grow most rapidly with it. It will produce small flowers above the waterline in a healthy environment. These plants can be a poor choice for small tanks due to the height, rate of growth, and willingness to spread.
Small fish, fry, and invertebrates will love the protection these plants offer, and other fish may enjoy snacking on the tender leaves. Brazilian Pennywort prefers to be planted in the substrate but can live as a floated plant as well.
Fanwort is a lovely stem plant that is similar in appearance to Hornwort. It’s easy to tell the difference between the two plants, though, because Fanwort has softer spines and a fluffier appearance.
These plants are an excellent choice for protecting fry and shrimplets and the soft texture of the leaves will not be too rough for them. Some fish may enjoy eating this plant, but it will grow back rapidly and may be difficult for your fish to eat all of it before it grows back.
Fanwort prefers supplementation and moderate lighting for best growth but can live in low-light environments.
Fanwort is extremely invasive and is illegal to sell or own in California, Connecticut, Maine, New Hampshire, Washington, Wisconsin, and several other states.
8. Rotala rotundifolia
Rotala rotundifolia is a hardy, diverse stem plant that can be submerged or emersed. How it is grown will affect both the leaf shape and the color of the plant, with submersed plants taking on dark green to red coloration, with some varieties exhibiting pink.
These plants grow best in moderate lighting with supplementation, but supplementation can potentially be avoided if you have a high-nutrient tank.
These are considered easy-care plants and are extremely popular in the aquatic trade because of it, so they are often easy to come by.
These plants create great hiding places for fish, fry, and shrimplets, but can create thick forests of plants if not maintained. Rotala rotundifolia are flowering plants, which can add more color and interest to your tank.
9. Rotala wallichii
Rotala wallichii is a beautiful, somewhat rare plant in the aquarium trade. It makes a nice midground or background plant due to its height and the fullness each plant can achieve. These plants thrive with moderate to high lighting, CO2 supplementation, and nutrient supplementation.
In nature, Rotala wallichii spends some time emersed and some time submerged, so providing this rotation to the plant may improve colors and growth over time. Without enough lighting, these plants may be green to red, but if you provide them with the lighting they prefer, you will be rewarded with beautiful red stems tipped with pink, and you may even have plants that develop purple coloration.
These plants are somewhat delicate, so they should be handled with care and are not a good fit for tanks with destructive fish like cichlids and goldfish.
10. Parrot’s Feather
Parrot’s Feather is a lovely, easy-care stem plant with thin, needle-like leaves that give the plant an appearance like a small evergreen tree or shrub. These are so easy to care for that they will practically grow themselves without any intervention on your part. If you provide light, these plants will grow.
These are unbelievably efficient at removing toxins, like ammonia and nitrites, from your tank. They are so efficient at consuming toxins that they have even been studied to assist with detoxifying polluted waterways.
Parrot’s Feather grows very rapidly and reproduces readily via rhizomes, so while it removes toxins and will provide a great hideaway for your fry and shrimps, it is necessary to routinely prune this plant. If allowed to grow and reproduce unchecked, this plant will consume nutrients needed by other plants and will easily take over your tank.
These plants are extremely invasive and because of this are illegal to sell or own in close to 20 states, so check your state’s laws before purchasing this plant.
11. Ammania gracilis
Ammania gracilis is a colorful stem plant addition and is perfect for midground and backgrounds of tanks. It will die without at least moderate lighting, but more light will bring out more color in the plant’s crinkly leaves. Moderate lighting will usually result in green to rust-colored plants. High lighting will help the plants turn to more of bronze-red or pink.
These plants require CO2 and iron supplementation to survive and while they can be somewhat hardy once established, they are prone to melt at initial planting. They are easy to propagate and once the plants get large, they can be pruned and the trimmings planted into new plants.
Anacharis can provide bright green color in your tank while improving water quality. It’s a great oxygenator and readily consumes toxins from the water. They can survive with low lighting and do not require CO2 or nutrient supplementation. Moderate lighting will produce the best growth.
These plants get very tall and full, making them a great option for larger tanks. They provide excellent shelter to fish and invertebrates. They are fast-growing, so any fish that may attempt to eat them will likely not be able to kill the plants before they begin to regrow.
These plants are often easy to find in pet and aquarium stores and are generally inexpensive. They are a great beginner plant.
13. Mermaid Weed/ Saw-Tooth Hygro
Mermaid Weed is an unusual aquarium stem plant that can add unique texture to your tank. The leaves start almost football-shaped, coming to a point at the end, with a serrated texture running along the edges. With supplementation and good lighting, these leaves will take on a thinner, feathery appearance. The leaves will begin light to medium green, but over time will take on shades of pink or gold. The stems are usually white or green and generally do not change color.
These plants are easy to propagate via planting pruned tops into a nutrient-rich substrate. Trimming and planting these trimmings will result in shorter, bushier plants. Tall or short, these plants are a great spot for fry and shrimplets. Mermaid Weed requires CO2 supplementation and will not grow well without nutrient supplements. Even with supplementation, it will grow relatively slowly.
14. Moneywort/Bacopa monnieri
Moneywort is a great aquatic plant that is happiest when floated but can be planted in the substrate, although you may have to weigh it down for it to stay planted. It requires at least moderate lighting, so if you are planting Moneywort in a tall tank, you may need to provide high lighting for enough light to reach the plant.
Without adequate lighting and nutrients, Moneywort may become thin and leggy. In low lighting, these plants will likely die, but if properly cared for, they can become full and healthy. Fish enjoy Moneywort plants in their environment, but these plants do not grow well in cool water so may not be a good fit if you are keeping a cool-water tank like a goldfish tank.
These plants are said to have Ayurvedic medicinal properties, but the FDA has advised caution in using them in this manner.
It’s important to differentiate between Bacopa monnieri and Creeping Jenny, which is an invasive species that is illegal to own in many states and is also sometimes called Moneywort.
Purchase plants from reputable sellers and if purchasing in person, make sure to pick the healthiest looking plants available. Even the best growers cannot guarantee snail-free plants, so it’s advised to quarantine all new plants before placing them in your main tank.
Different plants have different needs and require different levels of care, so choose plants that meet the needs of your tank and your lifestyle. Purchasing plants you can’t provide the proper care for will foul your tank water and will cost you money in the long run.
Aquarium stem plants are such a beautiful addition to tanks and can bring a sense of security to the fish in your tank. They’re a great option for fry nurseries and invertebrate hatcheries, especially those that share space with adult fish. With stem plants, you’ll be able to take your tank to the next level, creating depth and interest for both you and your aquatic pets. Use these reviews to help you select the perfect stem plants for your tank’s needs!
Featured image credit: BLUR LIFE 1975, Shutterstock