during december i lenghten the watering schedule to watering every 7 days. i bottom water and fertilize every time. my watering schedule for the month of december: on the 2nd, 9th, 16th. i gradually decrease the light from 10 hours a day to 8 hours a day - half an hour after every watering. after the 16th of december i am taking a break because of winter holidays and my plants receive care next time only in january.
Blog about growing living stones at the 63rd parallel north. This circle of latitude crosses Norway, Sweden, Finland, Russia, Alaska (USA), northern Canada and southern Greenland. "At this latitude the sun is visible for 20 hours, 19 minutes during the summer solstice and 4 hours, 43 minutes during the winter solstice." Wikipedia