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Hygrophila stricta

Hygrophila stricta

Hygrophila stricta is a large, upright background stem plant with broad bright green leaves and a medium growth rate.

Taxonomy
Class:Liliopsida
Order:Lamiales
Family:Acanthaceae
Genus:Hygrophila
Species:Hygrophila stricta

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Water Temperature

20 - 28 °C

pH Value

6 - 7.5

Water type

Freshwater

Light

Medium - High

CO2

Low to Medium

Expected height

50 cm

GH

4 - 20 dGH

KH

2 - 15 dKH

Species description

This classic aquarium plant is native to Southeast Asia, where it is widely distributed in countries like Thailand, Indonesia, and Malaysia. In nature, it populates freshwater wetlands, marshes, ditches, and the shores of slow-flowing channels and rivers. It grows spontaneously both submerged and emersed on the wet soils of alluvial plains, showing extraordinary adaptability to seasonal environmental transitions. Hygrophila stricta belongs to the Acanthaceae family and is often considered a variant or synonym of Hygrophila corymbosa (commonly referred to as Hygrophila corymbosa 'Stricta'). Its genetics are exceptionally stable and characterized by a marked rusticity.

Care, breeding and tankmates

Shows exceptional tolerance to chemical parameters, adapting to pH levels between 6.0 and 7.5 and to both soft and hard water. The ideal water temperature is between 18°C and 28°C. Regular water changes promote healthy growth and keep the water clean, avoiding the sedimentation of debris on the broad foliage. The most common problem is potassium deficiency, which manifests quickly as small round holes on older leaves leading to their drop. Also, if the plant reaches the water surface, it will start to grow in emersed form, producing darker, stiffer leaves and purple flowers in the leaf axils, but shading the submerged part.

Geographic Origin and Distribution

This species originates from: Southeast Asia.

Origin

South and Southeast Asia

Plant profile

Placement
Midground

This plant is best suited for the midground to background of the aquarium. Its relatively fast growth and larger leaf size make it a great focal point. It should be planted in small groups to create a dense, bushy appearance. Ensure it has enough space so lower leaves receive adequate light.

Botanical form
Stem

It features elongated, lanceolate leaves with a somewhat rugged texture. The stems are robust and grow upright towards the surface, seeking light. Its overall form adds a very natural, wild look to the aquascape. Under strong light, the upper leaves may display subtle color changes.

Growth
Medium

It exhibits a fast growth rate, especially under optimal conditions. High light and CO2 injection will significantly accelerate its vertical growth. In lower tech setups, the growth is more subdued but remains steady. Regular maintenance is required to keep its size in check.

Substrate
Medium

Hygrophila stricta requires a sturdy, nutrient-rich substrate to accommodate its thick stems and extensive, fast-growing root system. A high-quality aqua soil or clay-based substrate promotes robust vertical growth and thicker, more resilient leaves. A planting depth of at least 5 to 7 centimeters is ideal to prevent these large, buoyant stems from becoming uprooted and to allow their roots to access deep nutrient reserves efficiently.

Column fertilization
Recommended

Liquid column fertilization is highly recommended for this stem plant. It absorbs a majority of its nutrients directly from the water column through its leaves. A comprehensive liquid fertilizer applied regularly will yield the best results. Watch for signs of nutrient deficiencies on new growth.

Root fertilization
None

While it feeds heavily from the water column, a nutrient-rich substrate provides an excellent secondary nutrient source. Root tabs help establish a strong root system quickly. The roots help anchor the sturdy stems firmly in place. However, root feeding is not strictly mandatory if column dosing is high.

Trimming
Occasional

Regular trimming is essential to encourage lateral branching and a bushier shape. Cut the stem right above a node to promote new shoots. The trimmed tops can be easily replanted to propagate the plant. Avoid letting it overgrow and block light from shorter foreground plants.

Propagation
Cuttings

Propagation is straightforward and typical of most stem plants. Simply cut a healthy top portion and replant it directly into the substrate. The cutting will quickly develop new roots and continue growing. Leaving the bottom rooted portion will also result in new side shoots.

Sensitivity
Moderate

This species is generally hardy but can be sensitive to sudden changes in water parameters. It may melt if transitioned too quickly from emersed to submersed growth. It can also be susceptible to algae growth on its older leaves if flow is poor. Ensure good water circulation around the plant.

Layout role
Background

It serves excellently as a contrasting background or midground accent. Its unique texture breaks up monotonous green areas effectively. It pairs well with fine-leaved plants or different textures. It can also be used to hide aquarium equipment effortlessly.

Image gallery

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

Related species

Recommendations grouped by close relatives, companion choices, and similar care.

Variants and close relatives

Same atlas type, nearby scientific identity, genus, or family.

Hygrophila corymbosa 'Stricta'

Hygrophila corymbosa 'Stricta'

Hygrophila corymbosa "Stricta"

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Hygrophila guianensis

Hygrophila guianensis

Hygrophila guianensis

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Hygrophila lacustris

Hygrophila lacustris

Hygrophila lacustris

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Hygrophila angustifolia

Hygrophila angustifolia

Hygrophila angustifolia

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Hygrophila sp. 'Bihar'

Hygrophila sp. 'Bihar'

Hygrophila sp. "Bihar"

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Hygrophila difformis 'Weiß-Grün'

Hygrophila difformis 'Weiß-Grün'

Hygrophila difformis 'Weiß-Grün'

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Hygrophila corymbosa 'Aroma'

Hygrophila corymbosa 'Aroma'

Hygrophila corymbosa ''Aroma''

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Hygrophila corymbosa 'Kompakt'

Hygrophila corymbosa 'Kompakt'

Hygrophila corymbosa 'Kompakt'

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Pinnate Hygrophila

Pinnate Hygrophila

Hygrophila pinnatifida

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Willow-leaf hygrophila

Willow-leaf hygrophila

Hygrophila ringens

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Hygrophila sp. ("aufrechte Staurogyne sp.")

Hygrophila sp. ("aufrechte Staurogyne sp.")

Hygrophila sp. ("aufrechte Staurogyne sp.")

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Hygrophila corymbosa

Hygrophila corymbosa

Hygrophila corymbosa

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Hygrophila corymbosa ''Angustifolia''

Hygrophila corymbosa ''Angustifolia''

Hygrophila corymbosa ''Angustifolia''

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Hygrophila corymbosa ''Red''

Hygrophila corymbosa ''Red''

Hygrophila corymbosa ''Red''

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Hygrophila corymbosa "Siamensis"

Hygrophila corymbosa "Siamensis"

Hygrophila corymbosa "Siamensis"

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Hygrophila sp. 'Sarawak'

Hygrophila sp. 'Sarawak'

Hygrophila sp. 'Sarawak'

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Similar care

Cards with similar requirements, difficulty, habitat, and husbandry profile.

Nomaphila stricta

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Nomaphila siamensis

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Hygrophila polysperma ''Ceylon''

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Hygrophila lancea "Sarawak"

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Nomaphila corymbosa

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Hygrophila polysperma

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Staurogyne 'Bihar'

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Hygrophila sp. 'Tiger'

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Ammannia sp. 'Bonsai'

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Hygrophila sp. 'Bold'

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Hygrophila difformis

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Bacopa sp. "Japan"

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Hygrophila costata

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Hygrophila balsamica

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Last updated: 06/16/2026
Hygrophila stricta Care Guide & Tank Setup | Atlarium