Encyclopaedia

Plant atlas
PlantFreshwaterIntermediate

Ludwigia arcuata

Ludwigia arcuata

Ludwigia arcuata is a fast-growing, highly decorative stem plant valued for its needle-like leaves that turn intense red under strong light.

Taxonomy
Class:Liliopsida
Order:Myrtales
Family:Onagraceae
Genus:Ludwigia
Species:Ludwigia arcuata

Share

Check out Ludwigia arcuata on Atlarium

PracticeRecognition quizzesPhotos, names, origins, and puzzles to review Atlas species.Open quizzes
Water Temperature

12 - 28 °C

pH Value

4.5 - 7

Water type

Freshwater

Light

Medium to High

CO2

High

Expected height

30 cm

Expected width

12 cm

KH

2 - 15 dKH

Species description

Ludwigia arcuata is native to the wetland regions of the eastern coast of the United States, particularly in states like North Carolina, South Carolina, and Florida. In nature, it grows in damp ditches, boggy banks, shallow freshwater ponds, and slow-moving rivers. It is a flexible marsh plant that colonizes both emersed muddy soils and stagnant waters, adapting to seasonal water level fluctuations. It belongs to the Onagraceae family, genus Ludwigia, which is rich in species of aquascaping interest. Genetically, L.

Care, breeding and tankmates

Prefers soft to moderately soft water (KH 2-10 dKH, ideally below 6 dKH) and slightly acidic conditions (pH 4.5-7.0, ideally below 6.8). The optimal cultivation temperature is between 12°C and 28°C; it tolerates cool winter temperatures but dislikes extreme summer heat. The primary risk is loss of color and stem weakening if light or CO2 is insufficient. Lower leaves fall off if shaded by neighboring stems. It is susceptible to hair algae infestations if there are severe imbalances between light and nutrients.

Geographic Origin and Distribution

This species originates from: Eastern coast of the United States, particularly North Carolina, South Carolina, and Florida..

Origin

North America

Plant profile

Placement
Midground

Optimal placement for Ludwigia arcuata is as a midground to background. Careful positioning allows it to receive adequate light and flow. This strategic placement ensures it does not overshadow smaller plants while exhibiting its best form.

Botanical form
Stem

Botanically, Ludwigia arcuata is characterized as a stem plant. Its unique physiological traits make it a fascinating addition to the ecosystem. The leaf structure and overall form adapt closely to its submerged environment.

Growth
Fast

The growth rate of Ludwigia arcuata is generally considered moderate to fast. This steady development necessitates a well-planned maintenance schedule. Adjusting environmental factors can slightly speed up or slow down this rate.

Substrate
Medium

Ludwigia arcuata benefits significantly from a nutrient-rich aquarium soil, which encourages robust root development and supports its fast growth. The plant establishes a deep and extensive root system, so a substrate depth of at least 4 to 5 centimeters is recommended to securely anchor the stems. While it can extract nutrients from the water column via adventitious roots, a fertile substrate rich in iron and essential macronutrients will maximize its vibrant red coloration and stem thickness. Fine to medium-grained aquasoil is ideal, as it allows the delicate roots to penetrate easily without being crushed.

Column fertilization
Recommended

For column fertilization, Ludwigia arcuata prefers a rich dosing regimen. Liquid fertilizers are efficiently absorbed through its submerged surfaces. Consistent daily or weekly dosing ensures steady nutrient availability.

Root fertilization
None

Regarding root fertilization, it is absolutely true that Ludwigia arcuata requires a nutrient-rich substrate. A quality aquasoil or root tabs can significantly boost its long-term health. The root system plays an active role in stabilizing the plant and absorbing minerals.

Trimming
Occasional

Maintenance for Ludwigia arcuata primarily involves bushy trimming. Using sharp aquascaping scissors ensures clean cuts that heal quickly. Regular pruning encourages a more compact and aesthetically pleasing form.

Propagation
Cuttings

Propagation of Ludwigia arcuata is typically achieved through cuttings. This method is straightforward and yields a high success rate. Newly propagated sections should be planted with sufficient space to establish themselves.

Sensitivity
Moderate

Ludwigia arcuata is particularly sensitive to shading of lower leaves. Sudden changes in water chemistry can trigger negative reactions or melting. Maintaining a stable environment is the best preventative measure against these issues.

Layout role
Midground, accent, Nano

In an aquascape, Ludwigia arcuata serves excellently as a red focal point. Its visual characteristics draw the eye and create depth within the layout. It pairs well with contrasting textures to enhance the overall composition.

Image gallery

Licensed images linked to the species or, when marked, to the closest representative taxon.

Related species

Recommendations grouped by close relatives, companion choices, and similar care.

Variants and close relatives

Same atlas type, nearby scientific identity, genus, or family.

Ludwigia brevipes

Ludwigia brevipes

Ludwigia brevipes

View details->
Ludwigia ovalis

Ludwigia ovalis

Ludwigia ovalis

View details->
Ludwigia ovalis 'Pink'

Ludwigia ovalis 'Pink'

Ludwigia ovalis 'Pink'

View details->
Creeping Primrose-willow

Creeping Primrose-willow

Ludwigia repens

View details->
Ludwigia repens "Mesakana"

Ludwigia repens "Mesakana"

Ludwigia repens "Mesakana"

View details->
Ludwigia "Rubin"

Ludwigia "Rubin"

Ludwigia "Rubin"

View details->
Ludwigia senegalensis

Ludwigia senegalensis

Ludwigia senegalensis

View details->
Ludwigia palustris "Super Red"

Ludwigia palustris "Super Red"

Ludwigia palustris "Super Red"

View details->
Ludwigia × lacustris

Ludwigia × lacustris

Ludwigia × lacustris

View details->
Ludwigia palustris × repens

Ludwigia palustris × repens

Ludwigia palustris × repens

View details->
Ludwigia sp. 'Atlantis'

Ludwigia sp. 'Atlantis'

Ludwigia sp. 'Atlantis'

View details->
Mexican Primrose-willow

Mexican Primrose-willow

Ludwigia octovalvis

View details->
Ludwigia inclinata "Green"

Ludwigia inclinata "Green"

Ludwigia inclinata "Green"

View details->
Ludwigia inclinata "Red"

Ludwigia inclinata "Red"

Ludwigia inclinata "Red"

View details->
Ludwigia inclinata var. verticillata 'Curly'

Ludwigia inclinata var. verticillata 'Curly'

Ludwigia inclinata var. verticillata 'Curly'

View details->
Ludwigia inclinata var. verticillata "Araguaia"

Ludwigia inclinata var. verticillata "Araguaia"

Ludwigia inclinata var. verticillata "Araguaia"

View details->

Recommended companions

Compatible cards from coherent ecosystems with matching parameters.

Ramshorn Snail
Invertebrate

Ramshorn Snail

Planorbella duryi

View details->
Orange dwarf crayfish (CPO)
Invertebrate

Orange dwarf crayfish (CPO)

Cambarellus patzcuarensis "Orange"

View details->
Malaysian Trumpet Snail
Invertebrate

Malaysian Trumpet Snail

Melanoides tuberculata

View details->
Daggerblade Grass Shrimp
Invertebrate

Daggerblade Grass Shrimp

Palaemon pugio

View details->
White Pearl / Snowball shrimp
Invertebrate

White Pearl / Snowball shrimp

Neocaridina cf. zhangjiajiensis "White Pearl"

View details->
Olive nerite snail
Invertebrate

Olive nerite snail

Vitta usnea

View details->
Anubias gracilis

Anubias gracilis

Anubias gracilis

View details->
Cherry Shrimp
Invertebrate

Cherry Shrimp

Neocaridina davidi

View details->
Ammannia pedicellata

Ammannia pedicellata

Ammannia pedicellata

View details->
Green babaulti shrimp
Invertebrate

Green babaulti shrimp

Caridina cf. babaulti "Green"

View details->
Bladder snail
Invertebrate

Bladder snail

Physella acuta

View details->
Channelled apple snail
Invertebrate

Channelled apple snail

Pomacea canaliculata

View details->
Chinese mystery snail
Invertebrate

Chinese mystery snail

Cipangopaludina chinensis

View details->
Ear pond snail
Invertebrate

Ear pond snail

Radix auricularia

View details->
European river snail
Invertebrate

European river snail

Viviparus viviparus

View details->
Florida apple snail
Invertebrate

Florida apple snail

Pomacea paludosa

View details->

Similar care

Cards with similar requirements, difficulty, habitat, and husbandry profile.

Glandular Ludwigia

Glandular Ludwigia

Ludwigia glandulosa

View details->
Ludwigia repens × arcuata

Ludwigia repens × arcuata

Ludwigia repens × arcuata

View details->
Ludwigia inclinata var. verticillata "Cuba"

Ludwigia inclinata var. verticillata "Cuba"

Ludwigia inclinata var. verticillata "Cuba"

View details->
Rotala macrandra 'Butterfly'

Rotala macrandra 'Butterfly'

Rotala macrandra 'Butterfly'

View details->
Ludwigia sphaerocarpa

Ludwigia sphaerocarpa

Ludwigia sphaerocarpa

View details->
Ludwigia inclinata

Ludwigia inclinata

Ludwigia inclinata

View details->
Marsh Ludwigia

Marsh Ludwigia

Ludwigia palustris

View details->
Bacopa monnieri "Rundblättrig"

Bacopa monnieri "Rundblättrig"

Bacopa monnieri "Rundblättrig"

View details->
Ludwigia inclinata var. verticillata "Pantanal"

Ludwigia inclinata var. verticillata "Pantanal"

Ludwigia inclinata var. verticillata "Pantanal"

View details->
Ludwigia pilosa

Ludwigia pilosa

Ludwigia pilosa

View details->
Ludwigia repens 'Rubin'

Ludwigia repens 'Rubin'

Ludwigia repens 'Rubin'

View details->
Floating primrose-willow

Floating primrose-willow

Ludwigia peploides

View details->
Ludwigia perennis

Ludwigia perennis

Ludwigia perennis

View details->
Ludwigia mullertii

Ludwigia mullertii

Ludwigia mullertii

View details->
Ludwigia pulvinaris

Ludwigia pulvinaris

Ludwigia pulvinaris

View details->
Ludwigia sp. 'Super Red'

Ludwigia sp. 'Super Red'

Ludwigia sp. 'Super Red'

View details->
Last updated: 06/16/2026
Ludwigia arcuata Care Guide & Tank Setup | Atlarium