Brambles (Rubus fruticosus) are coming to the end of their flowering period but wherever I see a thicket the last flowers are teeming with insects. Typically there will be at least several species of bumblebee plus honeybees, bee flies, flies and various butterflies. The stems are already laden with ripening fruit. Looks like there will be a bumper crop of blackberries after plenty of sun, rain and pollination.