[Tropic]

Well, not really all herbivores supply good friendly manure for orchid plants. Some of it is really too 'strong' and can burn the roots and even the plants from splashing ammonia when watering. Cow, sheep and goat manure has to be well cured and aged before being used near orchids and even then, applied very sparingly. I have no trouble with horse and pig manure(except for the smell) and chicken manure I only use for tilling into soils for other farm crops. One problem one does have with using fresh horse manure ... and pig manure ... is that they tend to also contain various other plant seeds that germinate and become real pests. For this reason it is probably best to have a well composted manure that tends to limit some of this undesireable seed germination. But without a doubt, keeping the orchid nutrition natural sure pays off on the long run with healthy plants and excellent flowers.