Lake cress

Photo: sonnia hill, CC BY 2.0, via Wikimedia Commons

Stem plant · Brassicaceae

Lake cress

Rorippa aquatica (Eaton) E.J.Palmer & Steyerm.

easyGrowth: very slow

—

Height in the aquarium

medium to high

Light

low

CO₂ needs

20–25 °C

Ideal temperature

Water parameters

Understand these values
pH6 – 7.5
49
Carbonate hardness (KH)2 – 14°
0°25°
Temperature4 – 27°Cideal 20–25°C
0°C35°C
Position
foreground
Propagation
plantlets on the leaves, cuttings
Grows emersed
yes

In the wild

Overview

This American plant can form a small rosette or upright shoots, with leaves that are sometimes entire and toothed, sometimes deeply cut. Its look depends on the growing conditions. It stays fairly low underwater and offers the foreground foliage different from that of lawn-forming plants.

Scientific name
Rorippa aquatica (Eaton) E.J.Palmer & Steyerm.
Classification
Brassicales › Brassicaceae
IUCN Red List
Not evaluated (NE)

Natural habitat

North America

Observations (GBIF) and localities Native countries Rivers and lakes

Native countries
Introduced by people

No introduction reported outside its native range.

Countries: Kew World Checklist of Vascular Plants (WCVP). Dots: GBIF observations in the native countries.

In the aquarium

Growing in the aquarium

Moderately cool water, medium to strong light and a nutrient-rich substrate suit it. Growth is very slow, even in good conditions. Young plants can form on detached leaves left floating, which lets you propagate it. Do not confuse this method with the quick rooting of a classic stem cutting.

Sources:Flowgrow GBIF POWO (Kew) · Base map: Natural Earth

Lake cress · Aquarius