These plants were from a friend and appear to be annuals that seed prolifically. The flowers have just opened (London, Ontario) and look like delicate little pink orchids. The plants are 3-4 feet tall. I'm told that the seed pods explode when they're ripe.
Looks like Policeman's Helmet- Impatiens glandulifera http://www.kingcounty.gov/environment/dnrp/newsroom/newsreleases/2004/july/0701noxweed.aspx
Thank you so much. That's it exactly! It's interesting to know that it's illegal for sale in many places because of it's rampant spread. (I still think it's pretty!)
I do to, And it's easily pulled up when it travels to an area you don't want it in. Flowers can even be a darker pink and in between. Seed pods when ripe and touched do explode and spit seeds up to 20' away. Hense another commom name "touch-me-not". But, still, do be carefull. I've seen the plants get 10 ft. tall when happy! barb
