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Gardening Forum   ORGANIC GARDENING FORUMS  Composting Forum

Walnut Tree Leaves




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Walnut Tree Leaves

Sat Jun 05, 2010 10:42 am

Can walnut tree leaves be used in a compost heap/pile. Are they particularly acidic and if so maybe they could be used as a mulch around acid loving plants like rhododendrons.
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greenethumbs
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greenethumbs
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Re: Walnut Tree Leaves

Sun Jun 06, 2010 12:28 am

greenethumbs wrote:Can walnut tree leaves be used in a compost heap/pile. ...


If you're talking about Black Walnut, I have always heard that any part from that tree should NEVER be used in the garden or compost. Also, those trees should not be planted near the garden.
The Black Walnut tree material releases a "toxin" that will stunt or kill many types of plants.

Apparently, that is NOT a concern with English Walnut trees.
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farmerlon
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Sun Jun 06, 2010 2:26 am

If you sprinkle black walnut saw dust under your house you will never have termites, bugs, ants, spicers or anything.

I don't have any idea what it would do to a compost.

http://www.orkin.com/termites/alternati ... te-control
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Gary350
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Walnut Tree Leaves

Sun Jun 06, 2010 2:28 am

I guess I'm talking about English Walnuts, the ones with edible fruits. I need to check.
Thanks for the reply.
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greenethumbs
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Sun Jun 06, 2010 3:17 am

The "magic words" here are allelopathic and juglone. The first refers to the black walnut's penchant to kill/suppress other plants; the second, to the substance it emits in carrying out its purpose.

These may help you focus your search.

Cynthia H.
Sunset Zone 17, USDA Zone 9
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Re: Walnut Tree Leaves

Tue Jun 08, 2010 4:19 pm

greenethumbs wrote:I guess I'm talking about English Walnuts, the ones with edible fruits. ...


The nuts from the Black Walnut tree are also edible.

Within the last couple of years, I have planted both "Thomas" Black Walnut and "Carpathian" English Walnut trees on my property.
Several years from now, I hope to be harvesting nuts from both ... but I will keep the Black Walnut "parts" out of the garden and compost.
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