HomeAquarium PlantsBacopa Caroliniana - Care, Origin, Aquarium, Diet & More!

Bacopa Caroliniana – Care, Origin, Aquarium, Diet & More!

Keeping live plants in your aquarium comes with a multitude of advantages, though novice aquarists often perceive plant cultivation as either a bother or a daunting task.

Nonetheless, the plant spotlighted in this guide – the Bacopa caroliniana is quite simple to nurture, making it an excellent choice for a beginner’s setup.

We’re discussing Bacopa caroliniana, a plant that exhibits high tolerance to various water conditions and integrates seamlessly into the majority of freshwater aquarium environments.

Continue for a comprehensive guide on looking after this radiant aquatic plant, including propagation techniques.


Bacopa Caroliniana Details
Also Known AsLemon Bacopa, Water Hyssop, Blue Hyssop, Giant Red Bacopa
Scientific ClassificationBacopa caroliniana
Suitability for BeginnersEasy to care for
Optimal Lighting IntensityModerate to Bright
Potential HeightCan reach up to 16 inches
Foliage and Blossom AppearanceGreen or ruddy leaves, with blue blooms in optimal conditions
Ideal Tank CapacityNot less than 10 gallons
Recommended Water TemperatureRanges from 68 to 82 degrees F
Preferred Water ConditionspH value from 6.0 to 8.0, dGH from 2 to 15


Bacopa caroliniana primarily thrives in the United States, notably in the South, where the climate tends to be warmer. However, colonies of this plant have been observed in various places globally, including remote locations like South Korea.

This aquatic herb, part of the Plantaginaceae family, carries multiple names such as Water Hyssop, Lemon Bacopa, Blue Hyssop, or Giant Red Bacopa.

Bacopa caroliniana is a flowering species that releases a citrusy fragrance from its leaves when squashed. It typically grows near water bodies, and its leaves have a protective waxy layer that enables it to withstand moist conditions.

Reaching heights of approximately 16 inches, this ornamental plant serves as an excellent backdrop when situated at the rear of an aquarium. Bacopa caroliniana is also beneficial for concealing unsightly equipment like filter boxes, thereby preserving the aesthetic appeal of your tank.

Bacopa caroliniana has been recently subjected to scientific alterations to manifest bioluminescence.

This feat was accomplished by infusing the plant’s leaves with gold nanoparticles, causing its chlorophyll to radiate red, and the end goal of this groundbreaking experiment is to leverage these unique plants as eco-friendly substitutes for traditional street lamps.

Natural Habitat

Bacopa caroliniana thrives in balmy locales spanning numerous states, incorporating Florida, Texas, and South Carolina.

This flora flourishes in freshwater habitats, encompassing marshlands, lakes, ponds, and damp lowlands. This variety can develop entirely underwater given sufficient light, but it’s typically observed propagating along the bank or in low-depth aquatic areas.



The Bacopa caroliniana, with its vibrant hues, can truly infuse an otherwise uninspiring aquarium with an impressive dash of color. This plant species does flower, though the blooms tend to manifest more frequently when cultivated above the water surface.

When it does flourish underwater, expect to blue blossoms with approximately five petals each.

The light intensity influences the plant’s coloring in its habitat.

Under luminous conditions, the plant exhibits a reddish-brown shade, earning it the common moniker Giant Red Bacopa. Conversely, the foliage indicates a rich green color in less bright surroundings.

It features a roundish shape; each leaf spans about an inch and grows on either side of the stem in paired clusters. A waxy overlay allows the thick leaves to survive submerged, bestowing the upper leaf surface with a glossy appearance.

The leaf undersides, however, lack the same sheen due to the presence of tiny bristles. The leaves bunch together in densely packed groups in high-light conditions, granting the plant a bushy look.

Upon reaching full maturity, the Bacopa caroliniana plants can stretch to about 16 inches. If this proves too towering for your tank, keep the plant’s height in check by trimming the top portion.


Bacopa caroliniana is readily available at an affordable price in most aquatic pet shops, usually costing less than $5 for a handful of stalks.

If you’re overseeing a sizable tank, purchasing and cultivating the plant yourself could be cost-effective, even though its growth rate might be somewhat leisurely.

Why You Should Add Bacopa Caroliniana To Your Aquarium?

Cultivating underwater plants in your aquarium is a brilliant method to enhance the wellness of your aquatic pets’ environment. These plants efficiently filter harmful pollutants from the water, including nitrates that could otherwise fish.

As they undergo photosynthesis, plants enrich the water with oxygen while consuming carbon dioxide, providing your aquatic life with a well-oxygenated habitat. Fish, shrimp, and snails relish the refuge lush plants like Bacopa caroliniana offer.

Tall flora protects the fish from aggressive tankmates and excessively lights up the water column, reducing damaging stress levels.

Bacopa caroliniana is an exceptionally appealing plant that introduces color and structure to any aquarium. It gracefully undulates in the water current and occupies vacant regions in the habitat.

So, Bacopa caroliniana is an outstanding addition to any aquarium from a visual and functional standpoint.


Bacopa caroliniana is an exceptionally resilient plant that flourishes across diverse environments.

It can establish its roots in soil or sand and drift freely on the water’s surface, providing cover and refuge for your aquatic life. While the plant can endure in mildly saline water, it thrives optimally in freshwater settings.

This plant proves ideal for novices, tolerating minor environmental fluctuations and beginner mishaps as long as they’re rectified swiftly. Moreover, reproducing more of these plants is straightforward from this easy-to-multiply specimen.

Bacopa Caroliniana Plant Care Requirements

This section of our guide provides the essential steps for successfully cultivating the striking Bacopa caroliniana plant.

Aquarium Size

Lemon Bacopa caroliniana can thrive in aquariums of varying sizes. That being said, the plant can rapidly exceed the confines of a compact tank, necessitating more frequent pruning of stems and foliage.

Considering this, we advise incorporating this plant into an aquarium with a capacity of 10 gallons or more significant. This verdant plant swiftly ascends to touch the water’s surface in more spacious environments, continuing its lush growth above the water level.


Bacopa caroliniana doesn’t possess any particular demands regarding the tank base.

Thus, you can cultivate it either in small stones or sediment, whichever is most suitable for your underwater creatures and complementary greenery.


The Bacopa caroliniana, being a lofty flora, is ideally positioned at the rear of your aquarium, and it serves as a convenient camouflage for less pleasing apparatus like filtration units.

When setting Bacopa caroliniana, it’s necessary to employ plant anchors since this flora has the propensity to drift if not correctly fastened. Furthermore, this plant thrives most efficiently in a spot where it doesn’t have to contest with other vegetation.


Bacopa caroliniana is an incredibly resilient plant variety that conforms well to most aquatic environments and flourishes with minimal interference.

Essentially, given that the aquatic conditions are warm, possess a high saturation of oxygen, are well-illuminated, and have an abundance of nutrients, the plants need nothing further to flourish.

Your aquatic inhabitants will supply ample nutrients for the plants through biological waste, thus eliminating the need for additional fertilizer or CO2 supplementation.

Lighting Requirements

Bacopa caroliniana thrives under various light exposures and doesn’t necessitate potent lighting.

The main requirement is to guarantee that the plant has adequate illumination for photosynthesis and is not obscured by surface-dwelling plants or aquarium apparatus.

Water Parameters

Bacopa caroliniana exhibits notable versatility in various aquarium environments, although it gravitates towards water temperatures between 68 and 82 degrees Fahrenheit. While the plant can exist in less warm water, lower temperatures impede its growth.

For pH levels, Bacopa caroliniana optimally thrives within a range of 6.0 to 8.0. Despite being able to sustain growth in both soft and hard water conditions, it displays a preference for a hardness level ranging between 2 and 15 GH.

Tank Mates

The robust constitution of Bacopa caroliniana allows it to coexist with virtually any aquatic companions. Interestingly, most fish types seem disinclined to feed on the plant, possibly due to its resilient, glossy foliage or potent citrus aroma.

Even if your aquatic creatures start to consume the plant, there’s no cause for concern since this is a rapidly increasing species that swiftly bounce back.

To ensure your Bacopa caroliniana remains undisturbed by your aquatic inhabitants, we suggest opting for fish types not typically recognized as plant consumers.

Appropriate fish varieties could encompass:

  1. Danios
  2. Mollies
  3. Guppies
  4. Tetras
  5. Rosy barbs
  6. Corydoras catfish
  7. Yoyo loaches

The majority of invertebrate beings also prove to be agreeable companions for Bacopa caroliniana, encompassing freshwater snails and shrimp.

Tank Mates You Should Avoid?

A handful of organisms are incompatible as companions for Bacopa caroliniana.

Both crayfish and crabs have a reputation for decimating plant life, potentially causing chaos in a planted aquarium. Goldfish and sizable cichlids are infamous for their burrowing habits, which may result in your plants being dislodged.


The Bacopa caroliniana species proliferate quickly; thus, regular pruning of the stems is required to curb excessive growth.

Exercise caution when getting rid of the plant’s clippings. Bacopa caroliniana has the potential to become a nuisance if it infiltrates local aquatic systems.

If you choose not to use the offcuts for reproduction, consider incorporating them into your compost pile, bury them in the soil, or decompose them using a bleach solution.


Propagation” refers to the process by which a plant multiplies from a single progenitor plant.

Bacopa caroliniana proves to be a straightforward plant to multiply within an aquarium setting. This is advantageous as it allows you to purchase a small quantity and amplify it personally, provided you have the patience to allow the plants to develop.

Bacopa caroliniana multiplies by extending lateral shoots or runners that ultimately expand to create new plantings. You can hasten this development by clipping these lateral offshoots once they start to exhibit root growth and transplanting them to your desired location within your tank.

Conversely, if these side extensions fail to sprout roots, you can attempt to let the cutting float freely within the water. The shoot will continue growing as it flows, eventually fostering sources and allowing you to plant it.

Apical stem cuttings can be similarly transplanted. However, avoid embedding a cutting or side extension that lacks roots, as it will likely decay within the substrate.


Snails can be an undesired introduction to your aquarium via new plants. If feasible, the simplest method to avoid inviting nuisances into your plant arrangement is to purchase plants as tissue cultures.

It’s also advisable to prevent plants from being showcased in expansive tanks alongside other plants and aquatic life.

However, you can confirm that your plants are free from snails and other threats to your livestock.

Scrub the plants exhaustively before integrating them into the aquarium, and discard any expired foliage to prevent them from decomposing in the tank and contaminating the water.

Examine each plant for snails, and remove any you come across. You can also eliminate pests by immersing your plants in a gentle mixture of 20 parts water to 1 part bleach.

Just dip your plants in this mixture for a brief period and make sure to cleanse the plants entirely in pure water afterward. This ensures that any bleach residue is removed before the plants are placed into your aquarium.


I trust you found our guide to Bacopa caroliniana insightful. If so, please spread the word about this article before you leave!

This exceptionally robust plant is a breeze to cultivate and is an excellent choice for a beginner’s tank or even a paludarium. Lemon Bacopa is appropriate for mini tanks and more extensive systems, although upkeep is more labor-intensive in a smaller aquarium.

To look after the plant, you must prune the stems when the plant height exceeds its limit. If you have an extensive aquarium, the need for trimming is less frequent, making it a low-effort option.

Did you opt for Bacopa caroliniana for your aquarium? Which aquatic companions have you chosen? Let us know about your aquascape in the comment section below.

Fishkeeping Expert
Fishkeeping Expert
With years of collective fishkeeping knowledge, we are pleased to share the tank maintenance tips and fish care advice we've picked up along the way. Fishkeeping Expert is home to all fishkeeping tutorials and guides that will help you keep your fish healthy.


Please enter your comment!
Please enter your name here

Most Popular

Recent Comments

Christina Lee Turner on Fairy Shrimp vs Brine Shrimp
Fishkeeping Expert on Fairy Shrimp vs Brine Shrimp
Fishkeeping Expert on Imagitarium Parasite Remedy
Christina Turner on Fairy Shrimp vs Brine Shrimp