Okanagan's Most Unwanted

watch out for these invasive species

Invasive Species

An invasive species is an organism that is not native and has negative effects on our economy, our environment, or our health. Not all introduced species are invasive.Invasive species are capable of causing extinctions of native plants and animals, reducing biodiversity, competing with native organisms for limited resources, and altering habitats. Invasive plants and animals are the second greatest threat to biodiversity after habitat loss. In other North American jurisdictions many invasive plants are responsible for habitat damage, loss of subsistence resources, and economic loss.

The Hound stongue

It was originally produced in western Asia and eastern Europe. Her barium specimens of the Hound stongue were collected in Ontario in as early as 1859, and in the western provinces between 1922. It was very common around Montreal in 1884, and as a pest in Ontario. it also occurs in natural communities in Great Britain.


A common name is the hounds tongue

A scientific name is also cynoglossum officinial


It grows from 0.5 to 1.2 meters tall

Its bottom leaves are large and hairy (10-30 cm long, 2-5 cm wide)

Stem leaves are short and stalk less

Dull reddish-purple flowers produce for nutlets (seeds) each

The seeds are grayish-brown, rounded triangular in shape and are covered in short hooked prickles


The hounds tongue is a noxious weed found in forest range lands and roadsides in the southern interior of B.C.


No sightings have been reported in the Okanagan bu it is a well established plant in the Okanagan.


Each plant produces 2000 to 4000 barbed seeds a year.

Houndstongue Prevention

Don't let it go to seed

Maintain your land in a healthy, vigorous condition to ensure a productive plant community, competitive perennial grasses utilize water and nutrients that would otherwise be readily available to the hounds tongue

Follow a well designed, grazing management plan, excessive livestock grazing reduces competition and favors weeds

Regularly patrol your property for hounds tongue plants and immediately treat new infestations

Cooperate with adjacent landowners and encourage them to control hounds tongue

Re-vegetate disturbed, bare soils to a competitive perennial forage cover immediately after disturbance

Clean burrs from animals and from clothing and shoe before leaving infested areas

The European Paper Wasp

The European Paper Wasp was first reported in North America in 1978 near Boston Massachusetts.


After the first apperence in North America, from there it spread across the continent.


IT first appered in Vancouver Island in 2003, possible crossing the continent from the east or on a boat from Asia.


From Vancouver Island it has spread throughout southern B.C.


The scientific name for the European Paper Wasp is Polistes dominula.


It is black with yellow stripes, and spots on their bodies

It has slender, long legs that dangle below their bodies when they fly

They have a narrow waist with gradual constriction

Their nests are shaped like an upside down umbrella, the cells open downwards and are not covered with a paper shell


No sightings have been reported but it is a well established insect in the Okanagan.


They spread when the queen mates with more than one male, then she layes all of her eggs.

The European Paper Wasp Prevention

Sprays don't work on this wasp, so the best thing to do is to find the nesting spots and eliminate all nests.