This question recently arrived in our email inbox:
We have planted a number of shrubs at end of our property and fence line, including rose of Sharon, hostas, sand cherry, vines, lilacs, etc. We are in the planning stages of changing our back yard which is fairly small, and need to add soil to cover the roots of a linden tree which are growing out of the “lawn”. The question is can we add soil to the existing gardens without affecting the current shrubs and if so, is there a limit on how much. We are thinking we may need somewhere between 4-6 inches of new top soil.
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Welcome! I’m Margaret Roach, a leading garden writer for 25 years—at ‘Martha Stewart Living,’ ‘Newsday,’ and in three books. I host a public-radio podcast; I also lecture, plus hold tours at my 2.3-acre Hudson Valley (NY) Zone 5B garden, and always say no to chemicals and yes to great plants.