So, I brought the cactus collection inside the house for overwintering. They receive light from a metal halide currently 14/10. I've stopped watering the large trichs, and am still watering the year old trich seedlings (about 10-20 cm tall now).
I'd like to keep the seedlings growing steady through the winter if possible, while keeping the large ones dormant. I'm thinking that 14/10 is too long of a day length for dormancy, some of the large trichs seem to be getting thirsty/hungry. If I drop the daylength to 12/12 or 10/14 can I force dormancy in the large ones, while keeping the seedlings active just by watering/feeding?
Thanks!