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A quick search turns up warnings of periwinkle being an invasive species: http://www.canadiangardening.com/how-to/pests-and-diseases/the-top-10-unwanted-garden-
by pyre 12y ago
A quick search turns up warnings of periwinkle being an invasive species: http://www.canadiangardening.com/how-to/pests-and-diseases/the-top-10-unwanted-garden-plants/a/32921/5 http://www.canadiangardening.com/how-to/pests-and-diseases/t...
Seems like something that you might not necessarily want to introduce.
- eitally 12y agoPeriwinkle may be invasive but it's also easy to control, similar to English Ivy. It does great in shade and is an attractive option to plant (or allow to self-propagate) under large evergreens ... as an alternative to doing nothing and just having dead grass there like most people do.