from catching so many swarms last year I came to a few conclusions: First- Most swarms are low down- at least in suburbia- 9 out of 10 are easily accessed in my experience. The swarm I caught the other day was suburban- but there were many large eucalypts all about- and forests nearby- but the swarm was low down in a bush.
Second- of 15 swarms I caught last year 12 of them were on either:
- Citrus Tree
- Rose Bush
- Near lemongrass
so if you wanted to make the ultimate swarm attracting garden you would have a citrus tree with a rose bush beside it and planted with lemongrass around. Most swarms seem to land pretty near the mother hive so if you have an apiary having the swarm plants nearby may give you a good chance of catching your own swarms easily.
I wonder if dabbing a little lemongrass oil on a branch near a hive may act like having the pheromone on it? I guess you could hang a little jar with a few holes in the lid and a cloth with lemongrass oil inside from a branch?
@Peter48 yes- no doubt it was the queen pheremones on the bush that attracted the second swarm- still I find it surprising that they work so well over that large a distance- the queen just hones right onto them. That’s amazing if those pheromones can survive an entire year of exposure to weather?