The Newly emerged fertile Queen Wasp needs large quantities of nectar to fuel her while she builds her nest and begins to lay her first eggs. It has often been said that the first plant utilised by wasps is the humble gooseberry and that by monitoring the gooseberry flowers the wasp queens can be eliminated. ( not that that is a god idea! ). Presumably Asian Hornet Queen also require a nectar kickstart. Perhaps this could be the ideal site for hornet monitoring traps come Spring. I've checked most of the information posts available for info on the Queen's first meal but still nothing very detailed.
Steve.
Steve.