The Black Walnut (Juglans nigra L.) is a native of eastern North America, where it grows, mostly alongside rivers, from southern Ontario, Canada west to southeast South Dakota, south to Georgia and southwest to central Texas.

It is a large deciduous tree attaining heights of 30–40 metres. Under forest competition it develops a tall, clear bole; the open-grown form has a short bole and broad crown. The bark is grey-black and deeply furrowed. The pith of the twigs contains air spaces. The leaves are alternate, 30–60 cm long, odd-pinnate with 15–23 leaflets, the largest leaflets located in the centre, 7–10 cm long and 2–3 cm broad. The male flowers are in drooping catkins 8 to 10 cm long, the female flowers terminal, in clusters of two to five, ripening in the autumn into a fruit with a browish-green, semi-fleshy husk and a brown corrugated nut. The whole fruit, including the husk, falls in October; the seed is relatively small and very hard.

The Black Walnut was introduced into Europe in 1629. It is cultivated there as a forest tree for its high quality wood. It is more resistant to frost than the Persian Walnut, but thrives best in the warmer regions of Europe of fertile, lowland soils with a high water table. It is a light-demanding species. The wood is used to make furniture and rifle stocks, and oil is pressed from the seeds.

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Beliaqbs (Belia Hebda) Tue, 07 Feb 2012 10:22:50 -0000
Fashion Bed Group Fenton Black-Walnut Metal Daybed with Link Spring: Finally - a matching daybed to go with one ... http://t.co/boChkTk3
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Cherryrha (Cherry Kasik) Tue, 07 Feb 2012 10:11:25 -0000
Cuckoo Clock with Birds and Walnut Finish: 522/1 Black Forest s diverse line of Clocks are intricately carved o... http://t.co/GTd2I9u4
RT @eehammond: blue snow and binbag black crows up at walnut whipp's cross this morning, like the bruise i avoided running on the ice. it was close though
jprtr (Jody Porter) Tue, 07 Feb 2012 10:02:40 -0000
RT @eehammond: blue snow and binbag black crows up at walnut whipp's cross this morning, like the bruise i avoided running on the ice. it was close though
@NH7 Mapex Black Panther Blaster Series in Transparent Walnut Burst (Walnut Shells) #NH7atSummerStorm
TejalJohri (Tejal Johri) Tue, 07 Feb 2012 09:47:29 -0000
@NH7 Mapex Black Panther Blaster Series in Transparent Walnut Burst (Walnut Shells) #NH7atSummerStorm
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ElysianOrganics (ElysianOrganics) Tue, 07 Feb 2012 09:45:59 -0000
Mens Cedarwood, Orange, & Black Walnut / Healing Asthma Sufferers / Organic Body Butter - Vegan http://t.co/lh1KErte
Alera Double Pedestal Steel Credenza - Walnut/Black: Durable laminate top with square edge is scratch- and stain... http://t.co/j4g5dfE3
Mahaliayak (Stella Khuu) Tue, 07 Feb 2012 09:44:39 -0000
Alera Double Pedestal Steel Credenza - Walnut/Black: Durable laminate top with square edge is scratch- and stain... http://t.co/j4g5dfE3

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