Invasives

Pokeweed is a beautiful plant with large dark purple berries and reddish or purple stems. Even so it is an invasive plant. Pokeweed is...

Be aware that if you’ve used pollinator seed mixes to install pollinator habitat, make sure you don’t have issues with Amaranthus...

Yellow flag iris is an excellent example of a plant that is benign, even beneficial, in its native habitat of Northern Europe, where harsh winters keep it in check, but is a worrisome nuisance when it travels abroad. Sadly, it can now be found cheaply through online distributors like Craigslist at low cost because it is so easy to cultivate. And in the time honored tradition of sharing successful garden plants with your neighbors, people are literally giving it away! But when

Native to Europe and temperate Asia, leafy spurge currently is found throughout the world with the exception of Australia. It was probably introduced into the United States as a contaminant in imported grain. Since its introduction, the plant has become a serious management problem, particularly for the north and central plains states. All Oregon infestations have come under yearly control and are being mostly held in check.

At last week's Master Gardener Plant Clinic I was speaking with a local gardener who mentioned she was cultivating English Ivy in her...