Despite its celestial name, tree of heaven (Ailanthus altissima) is known for its infernal behavior. Tree of heaven threatens other plants by forming crowded thickets that suffocate nearly any ...

Q:The black walnut tree in my yard gives off nice shade. It is planted close to the house and this last year it did not drop any walnuts. Usually, I pay the neighborhood kids to pick up the nuts, so ...

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