I found the plant in my garden. I believe its some kind of weed. I live in Denmark, Europe and we have summer time here at the moment.
Thanks for your time.
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Previous answer is very close - but I'm willing to bet its actually Cardamine hirsuta, (common name Hairy Bittercress) a common weed in Europe in gardens and other places, and one which I spend a great deal of time weeding out. The flowers on C. pratensis are more attractive and different than the weedy, white ones C. hirsuta produces.