Toxic Hickory Nut Trees? Dividing figs...
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Douglas Hunt on Oct 31, 2012Melissa, what you are referring to is allelopathy, the beneficial or harmful effects of one plant on another plant by the release of chemicals from plant parts. Your hickory tree produces very small amounts of a non-toxic, colorless, chemical called hydrojuglone. When exposed to air or soil compounds, hydrojuglone is oxidized into the allelochemical juglone, which is highly toxic. It is present in such small amounts, however, that it is unlikely to affect other plants unless the are particularly susceptible. If the fig parts came from sprouts with roots, they should be fine. But remember that fig trees get to be quite large. You would need a very big yard indeed to have room for six of them.Helpful Reply
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