I have a few shots here with one tested riparium plant, and a second that looks promising. Last week I picked up some potted material Klein’s Floral and Greenhouses Inc. (external link), a local garden center, so that I could have a little more propagation material on hand. Klein’s has a nice selection of houseplants right now.
I have already used the plant shown here, Pilea cardierei in several riparium layouts, but the specimens there at the garden center looked especially good, so I got three little pots of them.
This plant is easy use in a riparium. With some water column fertilization it grows well with its roots suspended directly in the aquarium water. I have used the Riparium Supply Nano Trellis Raft as a support for the stems, which quickly root from cuttings planted directly into the raft, in the same manner as used for the Hemigraphis cuttings shown in the next figure.
With several groups of P. cardierei stems planted in this way it is easy to develop a midground hedge as a midground in front of taller riparium background plants.
This second one, a Dieffenbachia, is something that I have not yet tried in riparium culture. It seems that Dieffenbachia should be able to grow in a riparium, because I understand that most of the species are associated with moist to wet soil. I remember seeing a wild stand of a large species–these might have been D. maculata, the familiar “dumbcane”–in a swampy spot out in the rainforest in Costa Rica. Anyway, here is the plant that I purchased.
I imagine that this plant is some kind of cultivar, but there was no label in the pot. I would appreciate any suggestions that anybody might have. It is small now–the leaves probably 6″ (15cm) or so–but I imagine that it will grow quite a bit larger. I planted the main rooted stem in a Small Hanging Planter and snipped off several little divisions too. The potted plant went into my 20-gallon tank which I recently tidied up again.