Posted: 04/06/2016 at 14:00
Yes, definitely aphids. Try blasting them off with the hose unless your blueberries have flowers or developing fruit which may be damaged by a jet of water. Alternatively, use a hand spray with a couple of drops of washing-up liquid in water - this will drown them. Don't be tempted to use any commercial pesticide sprays on edible crops. If left they will damage the young growth which is what will be providing your fruit next year so they do need removing.