Quote:
Originally Posted by Ray
Found from Mexico, El Salvador, Nicaragua and Panama in lower rainforests at elevations of sealevel to 1000 meters as a large sized, hot growing terrestrial or pseudo-lithophyte on rocks in soil deposits above streams with a basal rosette of, fasciculate, glabrous below and pubescent above, long-petiolate leaves that blooms in the winter and early spring on a loosely several flowered inflorescence with acuminate floral bracts
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Sounds like the mix should be:
2 parts perlite or pumice
1 part woodland type potting soil
While it does partially answer the watering regimen, which is - don't let it dry out completely, but don't allow it to become soggy either. It doesn't answer the question of dormancy.
Since I've never grown this plant, I don't know what to say.
All I can offer is, watch the leaves and see what they do. That might clue you in on when to reduce or eliminate watering.
Although it doesn't sound like they like to be completely dry should they go dormant.
If this plant goes dormant, usually the best time to repot is during dormancy when there is a smaller chance of disturbing it, because usually the leaves and roots have died back, leaving behind either a tuber (stem or root) or an underground rhizome.
In terrestrial orchids, I've found that they don't like to be confined to too small of a pot. A good guideline for me when I grow terrestrials is:
1. Do the roots have ample space?
They shouldn't be all clustered together and pot bound like many of the home center Dendrobiums. The roots should have enough space to sprawl. All orchids have an advantitious root system versus a tap root system, so in terrestrial orchids it's not necessary to have too deep of a pot. It's more about how wide the pot is.
2. Do the leaves and shoots have ample space to grow?
Terrestrial orchids tend to be pretty sensitive to repotting or root disturbance in general. So if you've given the roots ample space to sprawl, you've most likely provided the plant with ample space to grow.
However, if the root system on the terrestrial orchid is naturally very sparse, then it's easier to look at how large the plants are and judge how much space the plant needs to produce about 2 seasons worth of growth.