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Hottonia inflata

Hottonia inflata

Hottonia inflata: a delicate stem plant for the midground or background with a medium growth rate. Featuring bright green pinnate leaves, it forms beautiful dense, feathery bushes.

Taxonomy
Class:Liliopsida
Order:Ericales
Family:Primulaceae
Genus:Hottonia
Species:Hottonia inflata

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Water Temperature

4 - 26 °C

pH Value

5 - 7

Water type

Freshwater

Light

Medium - High

CO2

Medium - High

Expected height

50 cm

Expected width

25 cm

GH

2 - 20 dGH

KH

2 - 14 dKH

Species description

Hottonia inflata is native to the eastern and southern regions of North America, where it inhabits slow-moving or stagnant waters such as ponds, ditches, swamps, and shaded floodplains. It is a marsh plant adapted to seasonal water level fluctuations, growing fully submerged during high water periods and emersed on muddy banks when the water recedes. Taxonomically, it belongs to the Primulaceae family and is the only species of the genus Hottonia native to the American continent, closely related to the European Hottonia palustris. Genetically, this species exhibits unique adaptations for survival in nutrient-poor waters, such as swollen, hollow stems that facilitate buoyancy and gas exchange. It features erect, fleshy, and branched stems that can reach a height of 30-50 cm in the aquarium.

Care, breeding and tankmates

Prefers soft and slightly acidic water, with an optimal pH range between 6.0 and 7.0 and a KH below 6. It is highly sensitive to high temperatures, preferring cool water between 15 and 25 °C, and tends to decay or rot quickly if kept constantly above 26 °C. The main risk is associated with high summer temperatures and poor water circulation, which can cause the base of the stem to rot. Furthermore, due to the fine structure of the leaves, it tends to trap organic debris, favoring the growth of filamentous algae.

Geographic Origin and Distribution

This species originates from: North America.

Origin

North America

Plant profile

Placement
Midground

This plant is ideal for the midground or background of the aquarium. It looks best when planted in dense clusters. Its unique, deeply lobed leaves create a stunning visual contrast with other aquatic plants.

Botanical form
Stem

It features a classic stem plant structure with whorls of finely divided, deeply pinnate leaves. The leaves are light green, providing a soft and airy appearance. Its inflated flower stalks are rarely seen submerged but are its namesake.

Growth
Medium

Under optimal conditions, its growth rate is relatively fast. It can quickly reach the water surface if left unchecked. Frequent monitoring is necessary to maintain its desired height and shape.

Substrate
Medium

Hottonia inflata prefers a nutrient-rich aqua soil that mimics its natural, organic-rich muddy habitats. Its delicate root system anchors gently into the substrate, functioning both to stabilize the stem and absorb essential trace elements. A fine-grained soil with a depth of at least 3-4 cm allows the roots to spread evenly. While it can draw nutrients directly from the water column, a fertile base encourages more robust and lush foliage growth.

Column fertilization
Recommended

Liquid column fertilization is essential as it draws most of its nutrients directly from the water. Regular additions of nitrogen, phosphorus, and potassium are highly recommended. Trace elements, especially iron, prevent the leaves from paling.

Root fertilization
None

While primarily a water column feeder, a nutrient-rich substrate can support a stronger root system. Root tabs can be beneficial in nutrient-depleted soils. However, they are secondary to consistent liquid dosing.

Trimming
Occasional

Trimming should be done regularly by cutting the stems at the desired height. The lower portions will often develop new side shoots, creating a bushier appearance. Replanting the tops is an easy way to expand the cluster.

Propagation
Cuttings

Propagation is straightforward through stem cuttings. Simply snip the upper part of the stem and replant it directly into the substrate. The original stem will branch out from the nodes just below the cut.

Sensitivity
Moderate

It can be sensitive to sudden changes in water parameters or significant drops in nutrient availability. Algae can easily accumulate on its finely divided leaves if flow is insufficient or nutrients are imbalanced. High temperatures above 26°C (79°F) may cause melting.

Layout role
Midground, Background, accent, group

Its primary role is to add texture and a bright green accent to the aquascape. It serves as an excellent transition plant between low foregrounds and taller backgrounds. The distinct leaf shape makes it a great focal point or complementary cluster.

Image gallery

Licensed images linked to the species or, when marked, to the closest representative taxon.

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Last updated: 06/16/2026
Hottonia inflata Care Guide & Tank Setup | Atlarium