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The Aquatic Plant Society – Pogostemon helferi (Downoi)
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Pogostemon helferi (Downoi)

Common Name: Downoi
Family: Lamiaceae
Genus: Pogostemon
Species: Helferi
Origins: Asia
Difficulty: Moderate
Growth Rate: Moderate
Placement: Foreground
Requirements: High light, temps 68 – 86F(20 – 30C), pH: 6 – 7.5 gh (GH = 9-13 dH)

This plant originates from Thailand where it was dubbed “Dao Noi”  or “Little star” in english. Pogostermon helferi is a stem plant with closely developing internodes that form a compact bush. Under high light in nutrient rich substrate, this plant may reach 2″ but will easily extend to 5″ in medium light. Though not necessary for keeping, CO2 injection does help this plant to reach its prime.

Yellowing, pale green or dropping leaves are direct signs of iron deficiency or insufficient lighting. Typical of most Pogostemon, the stems are firm and brittle so use care when handling.

Low light growth:

Crowding is a common problem so plant with ample spacing and trim accordingly

In nature:

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The Aquatic Plant Society
The Aquatic Plant Society is dedicated to promoting the science and aesthetic of the Planted Aquarium. We are committed to a responsible and environmentally conscious pursuit of the hobby, and invite all to share in and add to our knowledge.