in my area,they are in bloom the 2nd week of June,and the calceolus ,the next week. Funny enough,the calceolus can be found even on the road bank,but not the reginae.
In my experience,slipping your hand into the wild growth medium,was like putting your hand into the refrigerator full of grass clippings,but more loose and airy
I have Cyp. reginae in our flower garden. Planted it there in the late 90's. It is in black dirt a slight depression. full sun until about 2:00 PM, then bright shade.
The flowers fade from more red to pink if I don't protect them with an umbrella.. during the bright time of day. No special care. We have squirrels, occassional deer any others but no problems. I do spray lightly with repellant.