I need advice on Catasetums please.

[Subrosa]

I group all of my plants by the lowest night time temperature I want them to see. My indoor winter area can get into the mid 60sF, so I don't bother with the real hot growers. My groups are 60°F, 50°F, and no frost. Catasetum are in the 60°F group. When night time temps are consistently above 60°F my 60°F plants are outside. Catasetum sit I the absolute sunniest spot I can find. There's not enough intensity in sunlight at 40°N latitude to hurt them, unless I move them too rapidly into those conditions. Any plant moved from indoors to out should be gradually acclimated to natural light. I use the manure method for mine, filling their pot about 2/3 full of composted cow manure and the top 1/3 with whatever I have around, which lately is cedar mulch. I don't water until the pseudobulbs start to shrivel, by which time the roots are well down into the manure. At that time they sit in trays with a constant water level of a couple inches. When the leaves start to yellow I remove from the trays and reduce watering. When the leaves have dropped the plants get no more was until after repotting in the spring and the cycle repeats.