Pogostemon Erectus

Quick facts

Identity

Also known as

Indian Star Plant; Pine Needle Plant

Synonyms

Misapplied as Rotala verticillaris; Pogostemon sp. "erectus"

Environment

Freshwater

Native to

India (Western Ghats, Maharashtra)

Habitat

Marshes, ditches, and shallow seasonal wetlands in the Western Ghats and surrounding lowlands of India

Sourcing

Aquacultured

Conservation

Not Evaluated

Care

Care level

Moderate

Growth form

Stem

Max height

4 – 16 in (10 – 41 cm)

Spread

4 in (10 cm)

Growth rate

Fast

Placement

Midground, Background

Water

Temperature

70 – 82 °F (21 – 28 °C)

pH

5.5 – 7.5

GH

2 – 12 dGH

dKH

1 – 14 dKH

Flow

Low-Moderate

Light

Medium

CO₂

Beneficial

Planting

Substrate

Nutrient-rich preferred

Feeds from

Both

Fertilizer needs

Medium

Colors

Green

Feeding & breeding

Propagation

Cuttings

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Care guide

Overview

Reaching up to 16 inches tall while staying a compact few inches wide, this stem plant grows in tight, upright columns of whorled, needle-like leaves resembling small conifer sprigs. Medium-high light and steady CO2 keep the whorls dense rather than leggy, and regular topping maintains a full background wall. It roots best left undisturbed once established.

Care

This upright stem plant forms dense whorls of fine, needle-like leaves that give it a conifer-like silhouette unlike most other aquarium stems. Medium to high lighting keeps the whorls tight and compact; under weaker light the lower leaves drop and the stems become bare and leggy. CO2 injection is not strictly required but makes a marked difference in density and growth speed, and the plant responds well to a nutrient-rich substrate with root tabs. Trim the tops regularly and replant cuttings to maintain a dense, bushy background wall.

Planting & trimming

Plant stems individually or in small groups of three to five, spacing them enough that light reaches the lower whorls, and push several centimeters of stem into the substrate so it anchors firmly. An aquasoil or other nutrient-rich substrate is preferred, though it will grow in inert substrate if root tabs are added. Trim the growing tips as the stems near the surface to keep the stand dense rather than letting it grow leggy.

Fertilizing

Feed through both the root system and the water column, since this species draws nutrients well from either source. A nutrient-rich substrate or root tabs support strong lower growth, while a weekly liquid fertilizer dosed for nitrate, potassium, and iron sustains the fast-growing tops. Yellowing leaves or thinning whorls usually point to iron or micronutrient deficiency rather than disease, and increasing dosing along with steady CO2 typically resolves it.

Propagation

Propagate by cutting several centimeters off a healthy stem tip and replanting the cutting directly into the substrate, where it will root and produce new side shoots. The remaining lower stem will also branch and send up fresh growth after topping, so a single stand can be multiplied repeatedly over time.

Problems

The most common issue is algae fouling the fine leaves, usually from too much light relative to available nutrients and CO2, so trimming light duration or boosting fertilization and flow generally clears it. Some lower leaf shedding after planting or transplanting is normal while the stem adjusts to submersed conditions. Roots dislike disturbance, so once established the plant is best left undisturbed rather than frequently uprooted and moved.

Sources

1. Pogostemon erectus - ABC Plants
2. Pogostemon Erectus Care Guide - Melbourne Tropical
3. Pogostemon deccanensis - Flowgrow Aquatic Plant Database
4. Pogostemon erectus - Scale & Stem

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