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18 OONC Lisa Scott 1 Oct 21

Lisa Scott from OASISS speaks with Oliver Osoyoos Naturalists Society members about invasive plants.

Just what is an invasive plant?

During a lively discussion with Lisa Scott from the Okanagan Similkameen Invasive Species Society (OASISS), the question arose – What is an invasive plant?

Lisa described an invasive plant as having the following characteristics.

Are non-native to BC

Do not bring natural pathogens or predators

Establish aggressively and out-compete native vegetation

Bring detrimental impacts to humans, animals and ecosystems

Referred to as “non-native, “exotic,” “introduced” plant species or “weeds”


Ever wonder how an invasive plant can spread?

18 OASISS How invasive species spreadLisa Scott from the Okanagan and Similkameen Invasive Species Society suggests that three simple ways are the following:

1. Intentional introduction
2. Recreational gear and equipment
3. Transportation (e.g. watercraft)

What can you do to thwart the spread of invasive species?

18 OONC Lisa Scott 4 Oct 21

Lisa Scott from OASISS suggests 7 (seven) things that you can do.

1. Learn to recognize invasive plants

2. Avoid plants promoted as “fast spreaders” or “vigorous self-seeders”

3. Remove plants that are creeping or re-seeding outside of their intended area

4. Bag invasive plants and take to your local landfill for burial

5.Replace invasive plants with less aggressive species

6. Obtain topsoil, mulch and gravel from clean sources

7. Purchase local wildflower seed mixes onl


17 Milfoil haircut 1 croppedHarvester operated by the Okanagan Basin Water Board operates on Osoyoos Lake to trim Eurasian Milfoil during the summer. 


“Invaders Make Bad Neighbours”

When?:  Join us on Sunday October 21 for our fall Potluck Dinner

Where?: At the Oliver United Church, 511 Church Ave at 5.30 p.m.

18 OASISS Lisa Scott_2017 field flowers - Cropped.jpgLocal biologist Lisa Scott will be speaking on the latest invasive plants we need to be concerned about and how they are being tackled. Also learn about recent insect invasions that are causing quite a stir in the Okanagan-Similkameen Region.


Who? Guest Speaker: Lisa Scott, Executive Director
Okanagan and Similkameen Invasive Species Society (OASISS) 
will provide a presentation on invasive plants in the south Okanagan.

What to bring?  Bring a food contribution, plate, cutlery etc.

Membership renewals are also due.

For more information, please contact: Marianne Hutterli 250-498-2743