Answer: As you have discovered, this is a very tenacious plant, which is part of the reason why it makes such a good groundcover. You can continue to try to smother it, however it will take complete coverage and some time for this method to work. You could also use glyphosate according to the label instructions, being careful to apply it to only the undesired plants as it will kill desired plants, too. Some gardeners find the wipe-on application method more exact (easier to control) than the spray method. Good luck with your design!
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