They may keep cutting leaves for a while (maybe a couple months at best), but eventually they will stop. In my experience Atta texana (and I assume this is true for other Atta) only tend fungus gardens that have brood in them. Once the remaining brood develop in this garden, they will eventually stop cutting and farming
I've seen studies that show that the workers can live several years, though this isn't likely if they stop tending their fungus. I would recommend putting some Sunburst nectar/honey water/maple water in their outworld, as most leaf cutter workers in the wild actually derive their nutrition from the juices of leaves and extra-floral nectaries
In the mean time, I would just try various plants and flowers from around where you live. Rose flowers (dry and fresh) are a particular favorite of mine. Generally, I have noticed that they prefer plants in the Rosaceae family (rose family) and the Fabaceae family (pea family), though they have accepted a wide variety of plants
Why did your brother give you a queenless atta colony? That sounds like a scam. Even if it was a colony fragment, there is a good chance the pheromones will change by the time you get the queen and they will fight.
It's still supremely interesting sans queen, is it not?
Edited by mmcguffi, October 5 2021 - 7:11 AM.