Hygrophila polysperma 'Rosanervig'

Sunset Hygrophila

Hygrophila polysperma 'Rosanervig'

Sunset Hygrophila

  • Light leaf veins
  • Light green, yellowish to red hues
  • Easy to cultivate
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Plants of the genus Hygrophila which are cultivated emersedly can occaisonally show small, firm tissue overgrowths ("pustules") on their upper and lower leave side. These are completely harmless and not caused by pest infestation or disease. On newly sprouted submerged leaves these spots will no longer appear.

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Description

Hygrophila polysperma 'Rosanervig' is as undemanding as standard H. polysperma. Its shoots get about 5 - 8 cm wide and look best when they are kept in a height of about 20 - 40 cm. It is also known under the trade names 'Sunset' and 'Marmor' (i.e. Marble) and has a striking variegation with light nerves. But if you want deep-pink leaves you must provide intensive light. Otherwise the nerves are rather white.

The distinctive light colouring of the leaf nerves is probably caused by a virus which prevents chlorophyll from being produced in the cells around the leaf ribs, making them white. However, this virus does not affect other plants in the aquarium.

Submers

'Rosanervig' or 'Sunset' is a very easy plant that also tolerates hard water and gets along without CO2 addition. However, its growth is strongly enhanced by good nutrient and CO2 supply together with at least moderate lighting. Regular trimming supports a bushy growth. The plant is easily propagated by cuttings of the head and sections of the shoot. Young plantlets also form at the breaking points of detached leaves that float around in the aquarium.

Occasionally shoots may appear that have lost the white or pink pattern and are indistinguishable from standard Hygrophila polysperma. In order to retain the cultivar 'Rosanervig', these stems should be removed, and only shoots with the typical pattern of the leaves should be used for propagation.

With its striking white or pink leaf pattern, this Hygrophila attracts attention and is a versatile plant for bushes in the midground to background of aquariums.

Hydrophila polysperma "Sunset", in Europe sold under the name "Rosanervig", has its origins in the Danish aquatic plant nursery Tropica. One special characteristic of this variety are the white-coloured leaf veins. They are not the symptom of a nutrient deficiency, though. It is assumed that a virus prevents the tissue around the veins from producing chlorophyll. This virus specialises in this variety only and thus poses no danger at all for the rest of the aquarium plants. This variety of the so well-known robust Asian H. polysperma has become a very highly coveted aquarium plant.

This undemanding red-coloured plant is very interesting as it is probably the easiest plant of that hue in cultivation. It grows under almost any conditions. (read more)

Complete botanical name Hygróphila polyspérma (Roxb.) T.Anderson
Family Acanthaceae
Genus Hygrophila
Difficulty very easy
Usage Midground
Aquascaping very colourful plant for accents
Growth very fast
pH value 5 - 8
Temperature tolerance 4 - 35°C
Carbonate hardness 2 - 21°dKH
General hardness 0 - 30°dGH
Propagation Cuttings
Can grow emersed? yes
Source Flowgrow
Complete botanical name
Hygróphila polyspérma (Roxb.) T.Anderson
Family
Acanthaceae
Genus
Hygrophila
Difficulty
very easy
Usage
Midground
Aquascaping
very colourful plant for accents
Growth
very fast
pH value
5 - 8
Temperature tolerance
4 - 35°C
Carbonate hardness
2 - 21°dKH
General hardness
0 - 30°dGH
Propagation
Cuttings
Can grow emersed?
yes
Source
Flowgrow

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Weight
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Customer reviews

This item has been rated 4.6 out of 5 stars
13 Reviews
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5 Stars(11)
4 Stars(1)
3 Stars(0)
2 Stars(0)
1 Star(1)
Alessandro M.
Very lush
20th November 2020
Hygrophila polysperma 'Rosanervig' - Pot
Hygrophila polysperma 'Rosanervig' - Pot

Very healthy plant, nice and good condition. Arrived in good conditions and good quantity. Definetly up to my expectations and beyond.

Fabio B.
Bellissima. Spedizione top!
29th October 2020
Hygrophila polysperma 'Rosanervig' - Pot
Hygrophila polysperma 'Rosanervig' - Pot

Spedizione velocissima, solo 1 giorno! Mi hanno contattato per email appena fatto lordine per chiedermi quando volevo fosse spedito il pacco. (read more)

Perran T.
Fast growth and pretty
19th September 2015
Hygrophila polysperma 'Rosanervig' - Pot
Hygrophila polysperma 'Rosanervig' - Pot

In the hot summer weather, it struggled at first and lost a lot of leaves. However, it is perfect now and the pink leaves at the top look really nice. (read more)

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