A swarm of bees in May is worth a load of hay;
A swarm of bees in June is worth a silver spoon;
A swarm of bees in July is not worth a fly.

Proverbial bee-keepers’ saying, mid 17th century; meaning that the later in the year it is, the less time there will be for bees to collect nectar and pollen from flowers in bloom in preparation for winter..