Weed-opedia: Canada Thistle – Southern Exposure

Weed-opedia: Canada Thistle

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Canada Thistle

Canada Thistle (Cirsium Arvense)

What does it look like?: Be careful of its spikes! This is a nasty looking weed that can grow almost 6 feet tall if it is not attended to. Look out for its tall stalks which produce showy bright pink flowers.

What causes it?: Loosely compacted soil.

When does it show up?: Summer.

Best treatment plan: These can be hand pulled, but watch out for its thorny exterior. You can also find a Thistle selective herbicide if you want a less physically demanding treatment. Call a professional for a free quote.

How long will it take to get rid of it?: The herbicide can kill Canada Thistle in a matter of days, but be attentive to see if it resurfaces.