how close can you plant poplar trees
Spacing. Lombardy poplar (Populus nigra Italica) spreads to a width of 10 to 15 feet. For an overlapping screen or windbreak, plant the trees close enough to overlap after several growing seasons.For a quick screen, plant Lombardy poplars 5 to 8 feet apart.Take into consideration overhead power lines and underground water and sewer lines when planting Lombardy poplar.pacing. Lombardy poplar (Populus nigra Italica) spreads to a width of 10 to 15 feet. For an overlapping screen or windbreak, plant the trees close enough to overlap after several growing seasons.