| It sound the media is to moist.
I grow them three fern or mounted. I don't like using peat moss (exept for aclimation of flask) since in rainy season is almost imposible to make it dry.
Temperature here is almost steady throught out the year.
We have normally from 20 c to 30 c The coldest last year was 14 for a couple of weeks in december. the diference is dry season and rainy season.
I will attach some pictures nest week.
__________________  Costa rican orchids |