Marsh seedbox (Ludwigia palustris)

Also known as: Water primrose

The marsh seedbox (Ludwigia palustris) is an aquatic perennial herb that thrives in moist, waterlogged environments, such as wetlands and riverbanks. It is often used in aquariums due to its preference for submerged conditions. In Australia, it is deemed invasive because it can quickly dominate and overshadow native flora, disrupting local ecosystems. Its rapid growth and spread can also interfere with water flow and quality, posing a threat to aquatic habitats and biodiversity.

In This Article

Care Tips Water Sunlight Temperature Soil Fertilize Prune Propagation Repotting

Attributes of Marsh seedbox

Lifespan

Perennial

Plant Type

Herb

Plant Height

10 cm to 20 cm

Spread

90 cm to 1.2 m

Leaf Color

Green Red

Flower Size

2.5 cm

Flower Color

Yellow Green

Images of Marsh seedbox

Quickly Identify Marsh seedbox

Succulent stems with striking red hue.

Small, stemless greenish flowers (1/8-1/4 inch diameter).

Distinctive small capsule fruit, green to brown, numerous tiny seeds.

Medium to dark green leaves, elliptic to ovate, pinnate veins.

Slender, soft, pliable branching stem, green to reddish-green in color.

Scientific Classification of Marsh seedbox

Phylum

Vascular plants

Class

Dicotyledons

Order

Myrtales

Family

Evening primrose

Genus

Primrose-Willow

Species

Marsh seedbox

Planting and Growing of Marsh seedbox

Care Difficulty

Easy

Watering Schedule

Every 12 days

Sunlight Requirements

Full sun

Sunshine Duration

6-10 hours

Ideal Temperature

68-77℉

Soil Type

Potting Mix, Peat Mix

Soil pH

6.5-7.5

Fertilizer Type

Balanced

Pruning Season

Spring, Summer

Pruning Area

Branches, Leaves

Pruning Frequency

2 times a year

Repotting Season

Spring

Pot Type

Plastic, Ceramic

How to Water Marsh seedbox?

Ludwigia palustris, commonly known as marsh purslane, thrives in consistently moist soil. Aim to keep the soil wet but not waterlogged. A good rule of thumb is to water until you see some water coming out from the drainage holes.

What are the symptoms of an underwatered Marsh seedbox? ›

What should I do if my Marsh seedbox is not getting enough water? ›

What are the symptoms of an overwatered Marsh seedbox? ›

How to save an overwatered Marsh seedbox? ›

What Are the Sunlight Requirements for Marsh seedbox?

Sunlight Requirements: Full sun, Partial sun

Duration of light: 4 to 6 hours

The plant flourishes best under full to partial sun conditions. Proper lighting enhances its photosynthetic ability, supporting growth, and maintaining vibrant foliage colors.

How much light does Ludwigia palustris need? ›

What are the ideal light conditions for Ludwigia palustris? ›

How to achieve ideal lighting for Ludwigia palustris? ›

More About Sunlight Requirements Techniques→

What Is the Ideal Temperature Range for Marsh seedbox?

Ideal Temperature: 68 ~ 77℉

Ideal temperatures, ranging from 68°F to 77°F, are crucial for optimal growth because Ludwigia palustris thrives in warmth that supports active metabolism and robust root development. Maintaining these temperatures helps prevent stress and promotes healthy foliage and flowering.

What Soil is Best for Marsh seedbox?

Soil type: Sandy loam, Sandy soil, Loam, Peat soil, Acidic soil

Soil PH: 6.5 ~ 7.5

Ludwigia palustris thrives in nutrient-rich soils, benefiting from an environment where essential nutrients are readily available. This supports vibrant growth and robust health, ensuring the plant's vivid foliage. The plant prefers soils that retain moisture well but also allow for adequate drainage. This balance prevents the roots from waterlogging while providing consistent hydration, crucial for the plant's thriving. A soil rich in organic matter is ideal for this plant, as it enhances soil structure and fertility. The organic content helps maintain moisture and supports beneficial microorganisms crucial for its growth. More About Soil→

How to Fertilize Marsh seedbox?

Fertilizer type: Balanced

Ludwigia palustris, commonly known as water purslane, is a low-demand plant when it comes to fertilizers. For liquid fertilizer, a concentration of 2-3 milliliters per gallon is generally sufficient. Ensure you're not over-fertilizing, as excessive nutrients can cause algae growth in aquatic settings where this plant often resides.

How to Prune Marsh seedbox?

Pruning Time: Spring, Summer, Autumn, Winter

Look for any excessively long or weak stems that aren't producing enough leaves. These should be your primary target for pruning to maintain compact growth. Cut the stems just above a leaf node or a branching point. This encourages new shoots and leaf growth, making the plant bushier and more visually appealing. Check for any yellowing or damaged leaves. Carefully snip these away to prevent the spread of disease and maintain the plant's overall health and appearance. More About Pruning Techniques→

How to Propagate Marsh seedbox plant?

Propagate Time: Spring, Early summer, Autumn

Collect seeds from mature Ludwigia palustris plants and sow them in a seed tray filled with a suitable substrate. Ensure there is adequate light and warmth to facilitate germination.

Cut a 4-6 inch healthy stem from the plant, remove the lower leaves, and plant it in moist soil. Maintain consistent moisture and light until roots develop.

Carefully separate a section of the plant with its roots intact. Replant the divided section in an appropriate location, ensuring good soil and water.

More About Propagating Techniques→

How to Repot Marsh seedbox plant?

Repotting frequency: Annually or biennially

Repot Ludwigia palustris when you observe its roots sprawling out of the current container or the plant's growth has noticeably slowed. These signs indicate that the plant needs more space and potentially fresh nutrients. Ideal times are during its growing season when it is most active, typically in spring or summer.

Select a pot that is only slightly larger than the current one to prevent waterlogging, which can cause root rot. Ensure the chosen pot has ample drainage holes to help keep the roots from sitting in excess moisture. A pot with these features promotes healthy root development and supports robust plant growth.

Opt for a soil blend that retains moisture yet allows excellent drainage, ensuring roots do not stay waterlogged. A rich, organic compost mixed with a bit of sand or perlite makes for an ideal soil. This combination supports strong root growth and provides necessary nutrients for the plant.