Phragmipedium is the American lady's slipper — the counterpart to the Asian Paphiopedilum. The Phragmipedium section of the lady's slipper relatives includes around 30 recognized species from Central and South America. The genus experienced two commercial booms since the discovery of P. besseae in 1981 and P. kovachii in 2002 — intense red and pink flowers that do not occur in the Paphiopedilum world.
Like all lady's slipper orchids, Phragmipedium is listed in CITES Appendix I. P. kovachii even has a special note due to its scandalous discovery history. Only artificially propagated plants are available in trade.
Phragmipedium is the only orchid genus that can be kept permanently in a water bath. Especially P. besseae and P. kovachii come from rock crevices with constantly seeping water.
Partial shade, similar to Paphiopedilum. East or shaded south window. Avoid direct midday sun — the soft leaves burn quickly.
Most Phragmipedium species can handle normal room temperature:
A slight day/night difference (4 to 6 °C) helps with bloom induction.
Finer pine bark with a high sphagnum content — Phragmipedium needs a wetter substrate microclimate than Paphiopedilum. Some collectors use mineral substrates (pumice, lava granulate) for the besseae group due to better water retention. Substrate comparison · Repotting guide.
Salt-sensitive — use fertilizer only at quarter strength. In standing water culture, completely replace the standing water monthly to avoid salt accumulation.
Yes — Phragmipedium is the only orchid genus that tolerates permanent standing water of 1 to 2 cm at the bottom of the pot. Especially the besseae and kovachii relatives come from such habitats. Standard watering also works but is more maintenance-intensive.
The strictest protection category. Wild collections are prohibited worldwide. Only artificially propagated plants with proof are available in trade. P. kovachii has an additional special note due to particularly rigorous protection regulations.
Complex hybrids with besseae content — more robust than pure natural forms, bloom annually, and are manageable with standard care. P. pearcei is also suitable for beginners.
Almost always due to salt or fertilizer excess. Reduce fertilizer concentration to a quarter, flush with rainwater. In standing water culture, replace the water monthly.
In spring, before the new growth phase begins. Phragmipedium roots are sensitive to substrate decay — so it's better to repot annually than to wait.
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