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Here is some more info about this particular species: http://www.eattheweeds.com/tiger-lily/
I think it's a species of Zinnia.
It is a very aggressive highly invasive non-native weed.
Dame's Rocket is a serious invasive threat in BC. I'm certain the Invasive Species Council would appreciate if you reported your sighting to them. http://www.bcinvasives.ca/invasive-plant...
It is difficult to control, any parts of the plant left in the soil can resprout. The wikipedia site gives good info.
It's a Geranium.
It's a species of Echinacea. Purpurea maybe? http://en.m.wikipedia.org/wiki/Echinacea...
It is a species of Datura (http://en.wikipedia.org/wiki/Datura). Sometimes called Devil's Trumpet.