The Ludwigia Care Guide

Few genera give you as much color for as little effort as Ludwigia. These stem plants turn shades of red, pink, and copper under the right light, and they're forgiving enough that you don't need a high-tech setup to get some color out of them.

Why Ludwigia Matters

Red and pink coloration in planted tanks usually comes from a handful of genera, and Ludwigia is one of the easiest to work with. Repens and Super Red Mini will color up under moderate light, while rarer forms like Senegalensis and sp. White reward more experienced growers with striking patterns. It's a genus you can grow into as your tank matures.

Light and CO2

Ludwigia Repens will grow under low to medium light without CO2, though it stays mostly green and grows more slowly in those conditions. To get real red coloration out of any Ludwigia, you want medium-to-high light and consistent CO2 or liquid carbon — color intensity tracks light intensity closely in this genus.

Planting and Care

Plant stems a couple of inches apart, burying just the bottom node or two. Ludwigia are moderate to heavy root feeders, so root tabs help, and they also respond well to iron-rich liquid fertilizers, which tend to intensify red coloration. Pinch growing tips occasionally to keep stems bushy rather than leggy and thin.

Varieties Worth Knowing

Ludwigia Repens is the classic, easy-growing red-green stem. Ludwigia Super Red Mini stays more compact with more consistent red coloration. Ludwigia Rubin (Red Diamond) and Peruensis lean toward deep burgundy tones. For something unusual, sp. White and Senegalensis bring pink-and-cream patterning that stands out from typical red stems. For a striking orange-red variety, see our dedicated guide to Ludwigia 'Pantanal'.

Propagation

Same as most stem plants: cut a healthy top section just below a node and replant it, and the base will branch and send up new shoots on its own. Ludwigia roots reliably from cuttings, so a single bunch can turn into a full row within a few trims.

A Good Starting Point

Ludwigia Repens is the easiest entry point into the genus — it tolerates a wide light range, roots fast, and still gives you a hint of red coloration to build on as your setup matures.

Common Issues and Fixes

Staying green instead of red: Almost always a light issue. Increase intensity or duration, and make sure the plant isn't shaded by taller neighbors.

Leggy, sparse stems: A sign of insufficient light or infrequent trimming. Pinch growing tips regularly to encourage branching.

Melting after planting: Normal for the first 1-2 weeks as the plant sheds leaves grown in different conditions. Trim melted growth and be patient.

Pale new growth: Usually an iron or micronutrient deficiency — a comprehensive liquid fertilizer typically resolves it within a couple of weeks.

Keep Reading

• The Alternanthera Care Guide — another color-focused stem plant that doesn't demand a high-tech setup.
• The Myriophyllum (Milfoil) Care Guide — pair Ludwigia's color with feathery texture in the same background row.