Question: Do chill hours increase in dwarf fruit trees over what they are for the same variety in standard size tree? Maureen - Lakeland, Florida Answer: Maureen, good question. To the best of my knowledge dwarfing rootstock or semi-dwarfing rootstocks do not change the chill requirements on the fruit trees. On the other hand, dwarfing and semi-dwarfing rootstocks often cause the tree to fruit earlier in its life (often called making it precocious) so I…