I have 3 hives with Russian queens. I lost one over the winter, 3rd year with no treatment. I should have done a mite drop last fall but I was too confident after 2 years with no treatment. there were stores in the hive but they were all dead. Quite a large cluster by the way, about half were all the way into the cells as if they were starving. Maybe they just didn't move to the stores.
Now to the question. For a spring build up will the bees use the left over stores or does it require a the 1 to 1 syrup to stimulate them into brood rearing? :confused: