My improved kieffer ripens in july or August. We ripen things a week or 2 ahead of 2 zone warmer conditions sometimes because of the 100 degree summers we have. Some locations but i doubt yours would just now ripen improved kieffer on the tree. It then takes a month or more inside to turn yellow. The pears will all drop from the tree if not picked on time. Its a delayed fruiting tree. The fruit shape and leaves of improved kieffer can be viewed here Here comes the 2016 apple and Pear harvest!
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