A "hybrid" plant is produced when pollen of one species is used to fertilize flowers of another species. A hybrid poplar is a tree resulting from the combining, either naturally or artificially, of various poplar species into a hybrid.

Hybrid poplars (Populus spp.) are among the fastest-growing trees in North America and well suited for certain conditions. Poplar hybrids are not desirable in many landscapes but can be of major importance under certain forestry conditions.

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