A Tree-Spotter's Guide to Flowers: 6

The tiny green flowers of Spindle Euonymus europaeus are some of the least impressive of any British native tree but they go on to become one of the most eye-catching fruits. The flowers are pollinated by small flies, which also perform the same service for....

.........holly. There's an old country saying that a good holly berry crop indicates a hard winter on the way - in reality, it's the result of a warm spring when weather conditions during the flowering period in May were good for the flies.