I treat these like cool growing Phals. Technically the media should be kept moist, but I am a constant under-waterer, especially in the winter when things are inside. So, I know they won't die from drying out. In the winter they dry out regularly but I try not to let them stay dry for a long time - maybe 3 day or so. This is not by decision but by circumstance. My goal is to water once a week when they are kept cold (40s) in the greenhouse. 2x a week underlights inside. In the summer between the rains and me watering, they are closer to consistently moist, but never wet like my phrags.
In the summer, they are outside under bright shade after a couple of hours of morning sun. This is truly a shadier area in my outdoor growing space. Summer temperatures range between 75-85 in the day and in the 60s-70s most nights. Typical Northern Ohio temps with the occasional high 80- low 90s a few times a season. As long as they are shaded, they do just fine.
When the weather turns cool in the fall, my sarcos are one of the last plants to move under shelter. Once temps are in the low 40, especially if it is rainy, I move them into my 6x8 harbor freight greenhouse where the minimum temp is 45. They stay there for 6-10 weeks depending on the weather. When outdoor temps are in the low teens or single digits it is too challenging and expensive to keep up the heat in that little greenhouse. So, everything comes inside and goes under lights.
Most of my sarcos are in fine bark mix. I am playing with sphag, since I under water. So far I don't see a difference in the two media. I fertilize pretty much all year. 100ppm N is my target. I use RO inside and need some fertilizer so that the RO won't damage the plants. I flush with plain water every 3-4 waterings. K-lite and Peter CalMag are the main fertilizers in my rotation. As plants go outside in the spring, I use a time released fertilizer from Greencare. I am only one year in with this brand but I like what I see. It rains so frequently in May and June that is it hard to fertilize regularly. My thought is that the time release stuff is a stop-gap for that rainy period.
The only problem that I fight with the sarcos is a fungal spotting that prefers the new growths and can cause some serious damage if not addressed. I remove impacted leaves and growths, if necessary. Then treat with Pageant or whatever else is in my arsenal.
What else would be helpful know?