Downoi

Photo: DatHalfdanr, CC0, via Wikimedia Commons

Stem plant · Lamiaceae

Downoi

Pogostemon helferi (Hook.f.) Press

mediumGrowth: medium

3–10 cm

Height in the aquarium

medium to high

Light

medium

CO₂ needs

20–25 °C

Ideal temperature

Water parameters

Understand these values
pH5 – 7.5
49
Carbonate hardness (KH)2 – 14°
0°25°
Temperature15 – 28°Cideal 20–25°C
0°C35°C
Position
on hardscape, midground, foreground
Propagation
cuttings, separating offshoots
Uses
nano tank
Grows emersed
yes

In the wild

Overview

Nicknamed “little star” in Thai, this plant makes a very recognisable low accent. It grows naturally between the rocks of Thai streams, submerged for part of the year and then emersed when the level drops. It suits the foreground of a large tank or the middle of a small aquarium.

Scientific name
Pogostemon helferi (Hook.f.) Press
Classification
Lamiales › Lamiaceae
IUCN Red List
Not evaluated (NE)

Natural habitat

Southeast Asia

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

Good light, CO₂ and enough nutrients encourage vigorous green foliage. Handle the plants gently: they bruise easily. Cut cleanly below a node to prepare a cutting. It can be tied to a stone or a root with a loose thread, without squeezing the tissue.

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

Downoi · Aquarius