Arum italicum (Italian Arum)—New WA State Noxious Weed

VERDURE

Arum italicum in May

I have Arum italicum (Italian arum) in my garden, and in fact, 4 years ago I posted an ode to its beauty and ease of care in the garden.  I will be digging it out this spring after learning that the plant is listed for 2015 on the Washington State Noxious Weed list.

I remember seeing it for the first time in at the Hulda Klager Lilac Gardens in Woodland, WA.  There it was used as a dramatic herbaceous foil to their fabulous April display of spring bulbs, and of course, lilacs.  I subsequently purchased it for my garden.  This was in the mid-90s, but the tuberous plant has proven to be too successful at naturalizing in the wild.

The cultivar ‘Marmoratum’ is better known than the straight species because it’s leaves have a striking white pattern.  My arum has plain green leaves.  Either way, I understand that once plants are established, they are difficult…

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About Colleen Miko

Colleen Miko is a certified professional horticulturist with 20 years experience in landscape design who has designed award winning gardens for the NW Flower & Garden Show as well as HGTV’s “Landscaper’s Challenge”. Colleen is freelance garden writer and speaker.
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