Another vote for roundup. Most stone jobs are done over landscape fabric. This makes it almost impossible to pull up 100% of the roots. In the case of a lot of the common weeds, if you leave the most miniscule piece of root, the plant will quickly regenerate, often while multiplying at the same time. The most effective weed elimination is a systemic herbicide used according to instructions. A weekly 10 minute walkabout with a roundup pump sprayer should be more than sufficient. For long periods of time for the snowbirds, treat with preen just before you leave,,
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........American by birth....Union by choice
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