Tissue Culture

Hemianthus micranthemoides from North America is a graceful plant whose small, arched leaves make it look like a miniature version of Egeria. It has a characteristic trailing growth in intensive light, so it can be used as a foreground plant . A compact group of Hemianthus micranthemoides is very beautiful with its small, light-green leaves. In terrariums the plant forms a compact cushion. Used to be called Micranthemum micranthemoides.

Lilaeopsis brasiliensis from South America can grow very compact, but a “lawn effect” (4-7 cm tall) is only achieved at high light intensity. When planting in the aquarium small clumps (approx. 1/8 pot) should be placed a few centimetres apart to help the plants grow together more quickly. Place in an open position without shading from other plants to ensure good light. Lilaeopsis brasiliensis can be used in garden ponds, and also tolerates low salt concentrations in brackish aquariums.

Microsorum pteropus ‘Windeløv’ is a patented variety of Microsorum pteropus, named after Tropica’s founder Holger Windeløv. Its finely branched leaf tips make it one of the most beautiful aquarium plants. The Microsorum variety becomes 15-20 cm tall and wide. A hardy and easy plant for both beginners and the more experienced. Best results are obtained by planting it on a stone or tree root. If planted in the bottom the horizontal rhizome must not be covered. This plant is not eaten by herbivorous fish.

The Indian Pogostemon deccanensis (formerly known as Pogostemon erectus) forms compact groups of bright green, conifer-like stems, 15-40 cm tall and 1-3 cm wide. Pogostemon erectus is suitable as a background plant and creates a wonderful focal point in both smaller and larger groups. Intense light helps the plant to stay compact for a longer period. Moderate growth and vigorous roots. Plants will need frequent pruning, and cut off shoots will easily start growing when planted.

Aquarium plant from tissue culture in closed cup. Rotala ‘H’ra’ has rather narrow leaves and an overhanging or creeping growth. It is probably a variation of Rotala rotundifolia and has much resemblance to Rotala sp. ‘Green’. High light levels, good fertilization and added CO2 will induce almost exclusively creeping growth and a warm, rich orange coloration. This makes it possible to create a dense, orange mid-ground cushion or even an unusual, orange foreground carpet.

Aquarium plant from tissue culture in closed cup. Rotala wallichii is a demanding plant that develops red shoot tips in good light conditions. The most decorative effect can be achieved by planting a large number of stems in a group. Rotala walichii is good as background and midground plant and suitable even for small aquariums, because it is easy to prune if it grows too tall. CO2 addition boosts growth considerably. It also prefers soft, slightly acidic water.