Phalaenopsis Violacea, young orchid species, first flowering, potted in sphagnum moss (picture of 5 August 2012) var. coerulea Malysia x Dark red "Norton" |
Unfortunately, all the plants had recently been the victim of a fungal disease, so even if new leaves were beautiful, some roots and old leaves was not the best, but the stem was perfect, and she was calling me ...
Phalaenopsis Violacea, orchid species, detail of stem and roots (picture of 5 August 2012) |
Roots over the substrate have typical signs of Rhizoctonia solani fungus and after removing all the cubes I had a confirmation to my suspect: all the oldest roots (those in the center of the pot) were completely rotten and others were starting to rot, however, after cutting all the bad parts using sterilized scissors there are enough healthy roots. After cutting, I put the plant soaking in a systemic fungicide for about an hour (Azoxystrobin 22.9%, 1 ml diluted in 0.7 l of water).
Phalaenopsis Violacea, during repoting, roots detail, those in the middle have rotted by a fungal disease (Phytophthora or Pythium) (picture of 5 August 2012) |
As retention of humidity and consistence, sphagnum is the more similar substrate to cubes in which the roots have grown and I can gradually get them used to dry out between watering. Since this kind of phalaenopsis likes a humid climate, I put it in a bowl with wet expanded clay in a not too bright light position, in fact this species loves very suffused light.
Here it is in its location close to the Phalaenopsis Bellina.
Phalaenopsis Bellina and Phalaenopsis Violacea, orchids species, repotted with sphagnum-moss, on wet expanded-clay (picture of 6 August 2012) |
Links to information sheets about orchids species: Phalaenopsis Violacea and Phalaenopsis Bellina:
Go to sheets on IOSPE:
Phalaenopsis Violacea - sheet on IOSPE
Phalaenopsis Bellina - sheet on IOSPE
Go to sheets on Lagrelle:
Phalaenopsis Violacea - sheet on Lagrelle
Phalaenopsis Bellina - sheet on Lagrelle
Go to photographic collection on Phals.net:
Phalaenopsis Violacea - sheet on Phals.net
Phalaenopsis Bellina - sheet on Phals.net
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