Canada Thistle

Invasive species removal is the most difficult challenge I encounter in my gardening work, and Canada thistle (Cirsium arvense) is my biggest adversary. Most northern gardeners are familiar with this prickly aggressor, but I’ll introduce you just in case you’re not. Canada thistle is a perennial plant with spiny lobed leaves that grow in an…

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How to Deal with Creeping Charlie

Most gardeners have strong opinions about creeping Charlie, the weed more formally known as Glechoma hederacea. Some love it, claiming creeping Charlie provides food for bees and a savory, minty smell. Others wage war against this weed as though their lives depended on its eradication. Glechoma hederacea is an herbaceous groundcover perennial native to the…

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Have You Tried Weedless Gardening?

One of the most popular talks at last week’s Northern Green Expo was on weedless gardening, given by author, scientist and occasional Northern Gardener contributor, Lee Reich. Lee wrote the book on weedless gardening (literally) and has been an advocate for no-till gardening methods for many years. In 2009, he wrote a primer on weedless…

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