The plant called Myriophyllum aquaticum “Green” here has long been in the trade as Myriophyllum elatinoides. This name is used erroneously, however, because M. elatinoides is a synonym of Myriophyllum quitense, a completely different species from M. aquaticum.
This water milfoil has also become known as the male plant of M. aquaticum. In emersed cultivation it develops male flowers, whereas the “normal form” of M. aquaticum produces female flowers.
Myriophyllum aquaticum “Green” also differs from the M. aquaticum “normal form” in that the leaves of the submersed form are light to medium green, even under stronger lighting. Only the tips of the leaf pinnae at the shoot tip are often dark reddish brown.
In strong light, by contrast, the “normal form” develops light orange-brown, slightly larger submersed leaves.
- To be continued -
Myriophyllum aquaticum "Green" has roughly the same requirements as the M. aquaticum "normal form". Overall it is by no means particularly demanding, but a steady supply of CO2 and nutrients as well as medium to high light intensity are recommended so that this milfoil shows its full splendour. With a lack of CO2, growth may stop and the shoot tip may die off.
A lack of light leads to elongated growth with unattractive long internodes.
This milfoil is propagated easily, like other stem plants, by cutting off and replanting the upper part of the stem or the side shoots. The stem stump can be left standing and usually develops a few side shoots if it was not cut off too short. If one does not want to propagate the plant and the stand is to look very uniform, one can replant the tip and pull the rest of the shoot out of the substrate and discard it.
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