A field full of colours. The blue flowers on long stalks forming large groups are Viper's Bugloss (Echium vulgare). A 'weed' that grows nearly everywhere, in abandoned fields, roadsides, amidst garden and other garbage, even in vegetable gardens. If the sunny weather continues and turns into a period of drought, the Viper's bugloss does not die but will go on flowering. You can pick them and put them in a vase; they keep well.
Like many other plants from the Borinagaceae family, leaves and stem, in fact all green parts of the Viper's bugloss, are covered with rough reddish hairs.