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pine needles

Discussion in 'Organic Lawn Care' started by Keegan, Nov 7, 2007.

  1. Keegan

    Keegan LawnSite Senior Member
    from CT
    Messages: 612

    What do pine needles do to the soil? I've heard they are acidic.

    Thank you for your help
  2. shovelracer

    shovelracer LawnSite Silver Member
    Messages: 2,008

    Pine needles are acidic, but are often blamed for poor lawn conditions when they are not necessarily the cause. The needles themselves eventually decompose and create a mulch layer that releases nutrients back to the ground. Now a few needles themselves are not bad, but larger quantities can smother the weaker grass and eventually kill it off. The real culprits are the lack of sun caused by the tree, and the lack of sufficient water because the tree roots are competing with the grass and often win. It can be difficult to maintain lawn under mature pines cause of the above reasons. Removing the needles is not always the answer. If the trees are very tall you can prune the lower branches to allow more sun, but you still have the water issue. If this is not an option than your next and healthiest option is eliminate the grass under the tree completely and create a mulch bed under the canopy.
  3. Nate@TLCS

    Nate@TLCS LawnSite Member
    Messages: 97

    I have heard both no sun under pines and root competition and believe both, but what about dropping sap? I've trimmed many a pine and found sap leaks where there were no obvious wounds.

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