Answer: This dogwood, Cornus kousa, needs a half to a full day of sun. (Our native Cornus florida does well in morning sun or bright dappled shade all day.) However, although it is considered winter hardy to zone 5 I would plant it in a spot that is sheltered from sweeping winter winds. The reason I suggest this is that your zip code places you in zone 5A or the coldest part of zone 5. In an exposed and windy spot the microclimate might actually be as cold as zone 4.
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