Ludwigia inclinata sp. White

Scientific Name & Origin

This plant is a cultivated variety, so its naming can vary slightly. You'll commonly see it referred to as:

• Ludwigia inclinata var. verticillata 'White' 

• Ludwigia inclinata sp. 'White' 

• 'White Ludwigia' 

It is a variant or mutant of Ludwigia inclinata var. verticillata 'Cuba' and originates from swampy regions in tropical areas of Central and South America, including near Cuba .

 Description and Appearance

• Color: Its most striking feature is its ability to produce almost pure white or pearlescent leaves under optimal conditions, with vibrant green stems . In very intense light, the crown may develop subtle pink hues .

• Leaf Shape: It produces a dense mass of very narrow leaves that grow in a whorl pattern (multiple leaves at each stem node), giving it a delicate, fluffy, or bushy appearance .

• Growth Habit: This is a stem plant with a tall, upright, vertical growth habit, typically reaching 8-20+ inches in height, which makes it suitable for the midground to background of an aquarium .

 Water Parameters

This plant is adaptable to a range of soft to moderately hard water, but stability is key. The general guidelines from various retailers are:

• Temperature: 22-28°C (72-82°F) .

• pH: A slightly acidic to neutral range is best, typically between 5.0 and 7.5 .

• Substrate: Requires a nutrient-rich substrate, such as aquarium soil or clay-based substrates, to support healthy root growth .

 Lighting, CO₂, and Fertilization

This is where the plant gets its reputation for being demanding. To achieve the signature white coloration, specific conditions are non-negotiable.

• Lighting: High-intensity lighting is essential . In medium light, the plant will likely lose its white color and become greener, with only the newest growth at the crown showing a lighter shade .

• CO₂ Injection: CO₂ supplementation is mandatory for this plant to thrive . Without it, growth will stall, the plant will weaken, and it will fail to display its characteristic colors .

• Fertilization: Requires a consistent supply of both macro and micro nutrients. Regular dosing of a high-quality liquid fertilizer and the use of root tabs are highly recommended to support its fast growth and color .

 Difficulty and Growth Rate

• Difficulty Level: Advanced. This plant is consistently described as not for beginners and is best suited for experienced aquarists with stable, high-tech setups .

• Growth Rate: Under ideal conditions (high light and CO₂), its growth rate is moderate to fast .

 Propagation and Maintenance

• Propagation: It is propagated by taking stem cuttings. Simply cut a healthy stem and replant the cutting into the substrate .

• Maintenance Tips:

  • Regular Trimming: Prune regularly by trimming the tops to encourage bushier growth and prevent the stems from becoming leggy .

  • Remove Reverted Shoots: Ludwigia 'White' can sometimes produce shoots that revert to the stronger-growing, green wild type (resembling 'Cuba'). These shoots have larger leaves and grow faster. They must be cut off as soon as they appear to prevent them from taking over and to preserve the plant's white variegated form .

  • Avoid Aggressive Trimming: Some sources note it does not tolerate frequent, aggressive trimming of the lower portions of the stem .