Tomatillo and Ground Cherry Culture
You should start by hardening-off your transplants before setting them out.
Tomatillos and Ground Cherries transplants should only be set out after the danger of frost is past. They tolerate cooler conditions than other members of the Solanum family, so they could be the very first types you set out. Moderately rich, well-drained, well watered soil suit them--they don't need the fertility usually accorded to their more illustrious cousins.The plants aren't usually staked, but might benefit from it if grown really large. A coarse mulch such as straw usually suffices to prevent fruit-rot, except perhaps in really moist conditions.
The plants tend to flower while still very small; we usually pick them off until the young plants acquire some stature.
They do need to be kept picked, otherwise some eventually will fall and rot. If this occurs, you are certain to have lots of volunteers in your garden. Transplant them if this occurs; they are every bit as good as their parent.