These flowers are called Yellow Loosestrife (Lysimachia punctata) and they flower late in the summer. I photographed the flowers in my grand mothers garden where I find lots of interesting stuff to take photos of.
Information about the picture:
Camera: Olympus E-500 digital SLR camera
Exposure: 0.001 sec (1/1600)
Focal Length: 35 mm
ISO Speed: 100
Lens: Olympus Zuiko Digital 35mm F3.5 Macro
Location: Laupstad (Andørja), Troms in northern Norway