The queen wasp emerges from hibernation around the middle of April. She makes the first cell from chewed bark and saliva which is smaller than a golf ball. Within individual chambers she lays around 10 to 20 eggs feeding on insects and other invertebrates. By summer a normal wasp nest could contain up to 6000 individuals. Old nests will not be re-used but a new nest may be built close to the old one if it is in a favourable site.
Wasp stings can be very unpleasant and for some it can prove fatal. The insects venom can produce an allergic reaction of 2 types: respiratory obstructure or anaphylacticshock syndrome, this can cause vascular callaps, breathing becomes shallow, the pulse is almost undetectable and a victim can quickly loose consioness. Death from wasp stings is rapid compared to snake venom.