Hygrophila corymbosa 'Siamensis'
- Also labelled as Hygrophila corymbosa 'Stricta'
- Light green, lanceolate leaves
- Fast growing
- Very hardy and undemanding
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
The Siamese temple plant is a large stem plant that has long been valued for its low demands. It is also labelled Hygrophila corymbosa 'Stricta' by nurseries, but there are other H. corymbosa forms under the name.
Unlike "normal" broad-leaved Hygrophila corymbosa, the underwater leaves of H. corymbosa 'Siamensis' are lanceolate. They can grow to about 16 cm long and 3.5 cm wide, with coarsely wavy margins. The leaves are light to medium green on the upper side, light grey-green underneath. In strong light they can also take on a light bronze tinge. The shoots can be up to about 25 cm wide under good conditions. The sturdy stem, about 3 to 5 mm thick, is densely covered with leaves and grows upright. Occasionally side shoots appear in the leaf axils. The shoots grow quickly to at least 40 cm long and without pruning they eventually grow out of the water. The emersed plant has blue-green tinted leaves and branched inflorescences with small blue-purple flowers in the leaf axils.
Hygrophila corymbosa "Siamensis" is content with medium light intensity and tolerates hard water, but is grateful for good macro- and micronutrient supply, also via the substrate. The addition of CO2 is not necessary, but is very beneficial for growth. Because of its fast growth, the shoots often have to be pruned if you want to keep the plant submerged. Propagation is easy by head and partial cuttings.
This amphibious plant from Thailand looks particularly good in large aquariums as a mid to background plant. With its low demands, it is recommended for aquarium beginners and for the initial planting of newly set-up tanks. It goes well in Dutch-style planted aquariums and also in Asian biotope tanks. Because it also grows well emersed and then decorates itself with its pretty, small flowers, Hygrophila corymbosa "Siamensis" is also interesting for open tanks, paludariums and Wabi-Kusa.
Hygrophila corymbosa 'Siamensis' is a very robust aquarium plant, easy to obtain as well as easy to cultivate. It is one of many varieties of Hygrophila corymbosa, a very variable species that is found in all of Southeast Asia.
H. corymbosa 'Siamensis' can be kept in almost any aquarium, except in too small or too poorly lit a tank. It doesn't have high requirements regarding lighting and nutrient supply, and it tolerates a wide range of water hardness and temperatures. However, if the light intensity in relation to iron supply is too high it may develop symptoms of iron deficiency - green leaf nerves in yellowish leaf tissue. A lack of macronutrients may stunt its growth. Therefore one should make sure this plant, though hardy, is supplied with nutrients just like any other aquarium plant.
When the nutrient supply is good and the light intense, H. (read more)
| Synonyms | Nomaphila siamensis C. B. Clarke |
| Trader names | Hygrophila siamensis |
| Complete botanical name | Hygróphila corymbósa (Blume) Lindau |
| Family | Acanthaceae |
| Genus | Hygrophila |
| Difficulty | very easy |
| Usage | Semi-emersed plant for open tanks, Background, Midground, Street (Dutch style) |
| Growth | fast |
| pH value | 5 - 7 |
| Temperature tolerance | 18 - 30°C |
| Carbonate hardness | 2 - 18°dKH |
| General hardness | 0 - 30°dGH |
| Propagation | Cuttings |
| Can grow emersed? | yes |
| Source | Flowgrow |
| Synonyms |
| Nomaphila siamensis C. B. Clarke |
| Trader names |
| Hygrophila siamensis |
| Complete botanical name |
| Hygróphila corymbósa (Blume) Lindau |
| Family |
| Acanthaceae |
| Genus |
| Hygrophila |
| Difficulty |
| very easy |
| Usage |
| Semi-emersed plant for open tanks, Background, Midground, Street (Dutch style) |
| Growth |
| fast |
| pH value |
| 5 - 7 |
| Temperature tolerance |
| 18 - 30°C |
| Carbonate hardness |
| 2 - 18°dKH |
| General hardness |
| 0 - 30°dGH |
| Propagation |
| Cuttings |
| Can grow emersed? |
| yes |
| Source |
| Flowgrow |
How many plants do I need?
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