Care Guide
Bacopa australis
Bacopa Caroliniana
Care at a Glance
Lighting
Medium to high
Growth Rate
Fast
Growth Form
Stem plant
Placement
Mid-background
True Aquatic
Yes
Available As
Bunch plant
About This Plant
Bacopa caroliniana is an undemanding aquatic plant and makes a great choice for beginners. Bacopa caroliniana can tolerate a wide variety of aquarium conditions from low to high lighting and varying hardness. Bacopa caroliniana has large, full, green leaves and an upright growth habit that help to add a different texture in the aquarium. Under high light with supplemental CO2 and good fertilization, the leaves will develop pretty bronze-rose edges. Use Bacopa caroliniana as a background plant or keep some stems trimmed back in the midground area of the planted aquarium. Remember when you trim the stem plants in your aquarium, the cuttings can be replanted to make additional clusters. Bacopa caroliniana is a native of the eastern the United States.
About the Bacopa Genus
Family — Scrophulariaceae
Bacopa is a versatile genus of stem plants that adapts to low or high light and grows both submerged and emersed. Pinching the growing tip encourages side shoots and a bushier form.
Quick-Reference Details
- Common name
- Bacopa australis
- Scientific name
- Bacopa Caroliniana
- Family
- Scrophulariaceae
- Native to
- Eastern U.S.
- Difficulty
- Advanced
- Requirements
- Undemanding
- Lighting
- Medium to high
- Growth rate
- Fast
- Growth form
- Stem plant
- Placement
- Mid-background
- True aquatic
- Yes
- Available as
- Bunch plant
Difficulty — Advanced
Performs best with strong lighting, CO2 supplementation, and stable water parameters. Not recommended as a first plant.
CO2 & Fertilization
CO2 is optional. Growth improves with supplementation, but the plant survives and stays presentable without it.
Tank Size & Setup
Best in tanks 20 gallons or larger so background stems have room to grow up and be trimmed without overtaking the foreground.
Aquascaping & Placement
Place in the midground between foreground carpets and tall background stems. The structure adds visual depth and shelters small fish and shrimp. Trim and replant the tops every 3-4 weeks. The new growth tips hold the best color and form, while lower stems eventually need replacing.
Tank-Mate Compatibility
Compatible with the full range of community-tank species — tetras, rasboras, livebearers, corydoras, and most other peaceful freshwater fish do not damage the foliage.
Pro Tips for Growing Bacopa australis
- 1Pinch the growing tip to encourage side branching and a bushier shape.
- 2Bacopa is highly adaptable — it grows submerged, emersed, and in paludariums.
Common Care Issues
Outgrowing the tank
Plan to trim every 1-2 weeks. Skipping trims lets the plant shade out neighbors and trap detritus that fouls water quality.
Slow initial growth
Most aquarium plants pause for 2-4 weeks after planting while they convert from their nursery-grown emersed form to fully submerged growth. New leaves that emerge underwater will look thinner and slightly different — this is the plant adapting, not a problem.
Frequently Asked Questions
How much light does Bacopa australis need?
Bacopa australis (Bacopa Caroliniana) prefers medium to high lighting. A standard planted-tank LED fixture run 7-9 hours a day is typical.
Does Bacopa australis need CO2?
CO2 is optional. Growth improves with supplementation, but the plant survives and stays presentable without it.
Is Bacopa australis good for beginners?
Bacopa australis is rated advanced-level. Performs best with strong lighting, CO2 supplementation, and stable water parameters. Not recommended as a first plant.
How fast does Bacopa australis grow?
Growth rate is fast. Expect to trim every 1-2 weeks once established.
What fish and invertebrates are compatible with Bacopa australis?
Compatible with the full range of community-tank species — tetras, rasboras, livebearers, corydoras, and most other peaceful freshwater fish do not damage the foliage.
Available to Purchase
Bacopa australis — $19.99
Free 2-day shipping on orders over $100