Ask a Question forum: Pine mulch

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7b
Tkhan
Jan 11, 2018 3:53 PM CST
Hi all
I just picked up fresh pine mulch from my local park
I'm going to use it around my shrubs
I hear that the mulch will leach N from the soil What's the way to amend it come spring ?
I'm in NY and there is some melting snow
Name: Daisy I
Reno, Nv (Zone 6b)
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DaisyI
Jan 11, 2018 4:05 PM CST
I don't think pine mulch leaches Nitrogen but I do think it slows the breakdown of Nitrogen compounds in the soil so makes them inaccessable. I wouldn't add more Nitrogen.
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7b
Tkhan
Jan 11, 2018 4:11 PM CST
Thanks Daisyl
7b
Tkhan
Jan 11, 2018 5:13 PM CST
Daisyl will it harm my plants since the N will be inaccessible ?
Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
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DaisyI
Jan 11, 2018 5:19 PM CST
I really don't know. I would assume they would show signs of Nitrogen deficiency. Maybe use a Nitrogen foliar spray when that happens.
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost

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Name: Porkpal
Richmond, TX
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porkpal
Jan 11, 2018 5:25 PM CST
I always assumed that mulch spread on the surface would not mingle with the soil enough to have a Nitrogen inhibiting effect. I think it sits there and composts in place and feeds the soil as it is absorbed.
Porkpal
7b
Tkhan
Jan 11, 2018 5:27 PM CST
Ok will try it
I won't put too much and will keep and eye
I want to plant roses in that area and I have a dogwood tree and some shrubs in that little piece of my backyard where I will place the mulch
It's trial and error
But my thought is the forest also has all kinds of organic matter Crossing Fingers!
7b
Tkhan
Jan 11, 2018 5:30 PM CST
Thanks that's what I'm thinking
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Name: Lyn
Weaverville, California (Zone 8a)
Garden Ideas: Level 1 Garden Sages Celebrating Gardening: 2015
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RoseBlush1
Jan 11, 2018 9:46 PM CST
The bacteria that break down the mulch use nitrogen in the decomposition process., but really only for a few weeks. I don't think you will have a problem.
I'd rather weed than dust ... the weeds stay gone longer.
Name: Rick R.
Minneapolis, MN, USA zone 4
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Leftwood
Jan 12, 2018 12:50 PM CST
Porkpal is right. A mulch on the surface of soil does not have the ability to reach down into the soil below and suck nitrogen out. But it can temporarily "trap" nitrogen that is already in the mulch while it is decomposing, and keep it from percolating into the soil below. As a mulch (including pine needles) finishes decomposing, then it release the "trapped" nitrogen and feeds the soil below.

Mulches will only suck up the nitrogen in the soil if they are mixed with the soil.
Name: Philip Becker
Fresno California (Zone 8a)
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Philipwonel
Jan 12, 2018 1:33 PM CST
Hears what I know.
Pine needles, are high acid. Great for roses, and acid loving plants.

If pine needles are fully decomposed, no need for nitrogen.
If not, sprinkle a little sulfate of ammonia on, to energize decomposition and any robing of nitrogen. I guess, it would not be necessary, if you don't cultivate, and don't want needles to decompost, to improve, and enrichen the soil . Shrug!
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Anything i say, could be misrepresented, or wrong.
7b
Tkhan
Jan 12, 2018 1:33 PM CST
Thanks all for enlightening me

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