Invasive Plant

Common Tansy

Tanacetum vulgare
Warning icon

Warning

Toxic to humans and livestock

About This Species

Common tansy is often found growing in sunny, disturbed areas such as roadsides or pastures. It spreads via roots and seeds that can remain viable for up to 25 years. Common tansy is considered a noxious weed in the may regions of BC.

How to Identify

It has bright yellow, flat-topped, round flowers grow in clusters. Its foliage is dark green, and its leaves look like ferns with sharp edges. Common tansy plants range from 0.4 – 1.5 m tall and grow in clumps.

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Take Action

Prevention is the best approach.

Plantwise

Plantwise

Learn about best practices

A few non-invasive alternatives to plant instead of Common Tansy include:

  • Yarrow (Achillea millefolium)
  • Tall coneflower (Rudbeckia laciniata)
  • Summer sunflower (Heliopsis helianthiodes)
  • Morden Eldorado garden mum (Chrysanthemum x morifolium ‘Morden Eldorado’)
  • Flat-top goldentop (Euthamia (Solidago) gramnifolia)

Go Further

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Help protect BC from Invasive Species.