The catkins of the Hazel tree (Corylus avellana) have almost finished now, which is shame as they are such lovely things, such a pretty symbol of springtime. The catkins, often known as ‘lambs’ tails’, are the male flowers, shedding their pollen as a fine yellow dust as they blow in the wind. The female flowers are less conspicuous, tiny compared to the catkins but also very pretty, a bright lipstick pink. Although the Hazel is monoecious, which means both male and female flowers can be found on the same tree, the female flowers must be pollinated by pollen from a different tree if they are to go on and produce Hazel nuts.