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How close together can flowering pear trees be planted?
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You must take into consideration root zone as well as mature crown size when planting trees. The flowering pears will at maturity be 30 to 50 feet tall and 20 to 35 feet wide, 20 year old trees can be 50 feet high and 40 feet wide (source: Michael Dirr, Manual of Woody Plants).
So the answer would be 20 to 35 feet apart would be best and optimal spacing for roots and mature size.
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