when to use lime - Knowledgebase Question

New Port Richey, Fl
Question by lstransky
September 23, 2009
Is lime good for killing sand spurs? We have a yard that is alot of sand ( about 1/2 acre). We would like to grow some grass out there but have been unsuccesful with any seed we have used. Some one has told us that lime helps break up the sand and also manorganite helps. What can you suggest?

Answer from NGA
September 23, 2009


I don't think lime will kill sandburrs. Sandburrs, aka as sandspurrs or grassburrs, are difficult to control because the seeds remain viable for several years. So, even if you kill the tops of the plants, new ones will emerge as the seeds in the soil germinate. Therefore a two-pronged approach is best: treat the yard with Image or Momentum, Three Way, etc. to kill the existing weeds. (Sorry, there are no organic formulas effective against this weed.) You may have to make several applications (read and follow label directions). In conjunction with that, apply a pre-emergent herbicide in the spring to keep the seeds from germinating.

To improve your soil so you can grow lawn, incorporate lots of organic matter to help hold moisture and nutrients. Spread a 4-5" layer over the soil and dig or rototill it in. Rake the area level and then plant your grass seeds. After broadcasting the seeds, spread a thin layer of peat moss or compost to help keep the seeds moist.

Best wishes with your landscape!

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